AI Trajectory

null

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "KMSANReasoning": "",
  "NeedsKMSAN": false,
  "Reasoning": "The patch series modifies KVM interrupt controller and vCPU stolen time handling exclusively within arch/loongarch/ (arch/loongarch/kvm/intc/* and arch/loongarch/kvm/vcpu.c). These code paths are specific to the LoongArch architecture and are not compiled or reachable on the target architecture (amd64).",
  "WorthFuzzing": false
}

null

{
  "PatchDiff": "commit 9b3956f85f79ca42b4c49ce1233e64d918e6dd7b\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Mon Sep 28 16:16:58 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/arch/loongarch/kvm/intc/dmsintc.c b/arch/loongarch/kvm/intc/dmsintc.c\nindex 89f980d867be7..d42567eba3ed6 100644\n--- a/arch/loongarch/kvm/intc/dmsintc.c\n+++ b/arch/loongarch/kvm/intc/dmsintc.c\n@@ -70,8 +70,13 @@ int dmsintc_set_irq(struct kvm *kvm, u64 addr, int data, int level)\n \tunsigned int irq, cpu;\n \tstruct kvm_vcpu *vcpu;\n \n+\tstruct loongarch_dmsintc *s = kvm-\u003earch.dmsintc;\n+\n+\tif (!s)\n+\t\treturn -EINVAL;\n+\n \tirq = (addr \u003e\u003e AVEC_IRQ_SHIFT) \u0026 AVEC_IRQ_MASK;\n-\tcpu = (addr \u003e\u003e AVEC_CPU_SHIFT) \u0026 kvm-\u003earch.dmsintc-\u003ecpu_mask;\n+\tcpu = (addr \u003e\u003e AVEC_CPU_SHIFT) \u0026 s-\u003ecpu_mask;\n \tif (cpu \u003e= KVM_MAX_VCPUS)\n \t\treturn -EINVAL;\n \tvcpu = kvm_get_vcpu_by_cpuid(kvm, cpu);\n@@ -161,11 +166,14 @@ static int kvm_dmsintc_create(struct kvm_device *dev, u32 type)\n \n static void kvm_dmsintc_destroy(struct kvm_device *dev)\n {\n+\tstruct loongarch_dmsintc *s;\n \n \tif (!dev || !dev-\u003ekvm || !dev-\u003ekvm-\u003earch.dmsintc)\n \t\treturn;\n \n-\tkfree(dev-\u003ekvm-\u003earch.dmsintc);\n+\ts = dev-\u003ekvm-\u003earch.dmsintc;\n+\tdev-\u003ekvm-\u003earch.dmsintc = NULL;\n+\tkfree(s);\n \tkfree(dev);\n }\n \ndiff --git a/arch/loongarch/kvm/intc/eiointc.c b/arch/loongarch/kvm/intc/eiointc.c\nindex 80f78e07c74a6..c68f9033638a1 100644\n--- a/arch/loongarch/kvm/intc/eiointc.c\n+++ b/arch/loongarch/kvm/intc/eiointc.c\n@@ -112,8 +112,11 @@ static inline void eiointc_update_sw_coremap(struct loongarch_eiointc *s,\n void eiointc_set_irq(struct loongarch_eiointc *s, int irq, int level)\n {\n \tunsigned long flags;\n-\tunsigned long *isr = (unsigned long *)s-\u003eisr;\n+\tunsigned long *isr;\n \n+\tif (!s)\n+\t\treturn;\n+\tisr = (unsigned long *)s-\u003eisr;\n \tspin_lock_irqsave(\u0026s-\u003elock, flags);\n \tlevel ? __set_bit(irq, isr) : __clear_bit(irq, isr);\n \teiointc_update_irq(s, irq, level);\n@@ -675,6 +678,7 @@ static void kvm_eiointc_destroy(struct kvm_device *dev)\n \n \tkvm = dev-\u003ekvm;\n \teiointc = kvm-\u003earch.eiointc;\n+\tkvm-\u003earch.eiointc = NULL;\n \tmutex_lock(\u0026kvm-\u003eslots_lock);\n \tkvm_io_bus_unregister_dev(kvm, KVM_IOCSR_BUS, \u0026eiointc-\u003edevice);\n \tkvm_io_bus_unregister_dev(kvm, KVM_IOCSR_BUS, \u0026eiointc-\u003edevice_vext);\ndiff --git a/arch/loongarch/kvm/intc/ipi.c b/arch/loongarch/kvm/intc/ipi.c\nindex 7b333a4a0430f..6ee90c10827ad 100644\n--- a/arch/loongarch/kvm/intc/ipi.c\n+++ b/arch/loongarch/kvm/intc/ipi.c\n@@ -444,6 +444,7 @@ static void kvm_ipi_destroy(struct kvm_device *dev)\n \n \tkvm = dev-\u003ekvm;\n \tipi = kvm-\u003earch.ipi;\n+\tkvm-\u003earch.ipi = NULL;\n \tmutex_lock(\u0026kvm-\u003eslots_lock);\n \tkvm_io_bus_unregister_dev(kvm, KVM_IOCSR_BUS, \u0026ipi-\u003edevice);\n \tmutex_unlock(\u0026kvm-\u003eslots_lock);\ndiff --git a/arch/loongarch/kvm/intc/pch_pic.c b/arch/loongarch/kvm/intc/pch_pic.c\nindex 2b63b0c2c7ce6..2baf9ecf0c8aa 100644\n--- a/arch/loongarch/kvm/intc/pch_pic.c\n+++ b/arch/loongarch/kvm/intc/pch_pic.c\n@@ -48,6 +48,9 @@ void pch_pic_set_irq(struct loongarch_pch_pic *s, int irq, int level)\n {\n \tu64 mask = BIT(irq);\n \n+\tif (!s)\n+\t\treturn;\n+\n \tspin_lock(\u0026s-\u003elock);\n \tif (level)\n \t\ts-\u003eirr |= mask; /* set irr */\n@@ -71,10 +74,11 @@ void pch_pic_set_irq(struct loongarch_pch_pic *s, int irq, int level)\n int pch_msi_set_irq(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *e, int level)\n {\n \tu64 msg_addr = (((u64)e-\u003emsi.address_hi) \u003c\u003c 32) | e-\u003emsi.address_lo;\n+\tstruct loongarch_dmsintc *dmsintc = kvm-\u003earch.dmsintc;\n \n-\tif (cpu_has_msgint \u0026\u0026 kvm-\u003earch.dmsintc \u0026\u0026\n-\t\tmsg_addr \u003e= kvm-\u003earch.dmsintc-\u003emsg_addr_base \u0026\u0026\n-\t\tmsg_addr \u003c (kvm-\u003earch.dmsintc-\u003emsg_addr_base + kvm-\u003earch.dmsintc-\u003emsg_addr_size)) {\n+\tif (cpu_has_msgint \u0026\u0026 dmsintc \u0026\u0026\n+\t\tmsg_addr \u003e= dmsintc-\u003emsg_addr_base \u0026\u0026\n+\t\tmsg_addr \u003c (dmsintc-\u003emsg_addr_base + dmsintc-\u003emsg_addr_size)) {\n \t\treturn dmsintc_set_irq(kvm, msg_addr, e-\u003emsi.data, level);\n \t}\n \n@@ -281,7 +285,10 @@ static int kvm_pch_pic_init(struct kvm_device *dev, u64 addr)\n \tstruct kvm_io_device *device;\n \tstruct loongarch_pch_pic *s = dev-\u003ekvm-\u003earch.pch_pic;\n \n-\ts-\u003epch_pic_base = addr;\n+\tif (!addr)\n+\t\treturn -EINVAL;\n+\tif (s-\u003epch_pic_base)\n+\t\treturn -EBUSY;\n \tdevice = \u0026s-\u003edevice;\n \t/* init device by pch pic writing and reading ops */\n \tkvm_iodevice_init(device, \u0026kvm_pch_pic_ops);\n@@ -289,8 +296,11 @@ static int kvm_pch_pic_init(struct kvm_device *dev, u64 addr)\n \t/* register pch pic device */\n \tret = kvm_io_bus_register_dev(kvm, KVM_MMIO_BUS, addr, PCH_PIC_SIZE, device);\n \tmutex_unlock(\u0026kvm-\u003eslots_lock);\n+\tif (ret \u003c 0)\n+\t\treturn ret;\n \n-\treturn (ret \u003c 0) ? -EFAULT : 0;\n+\ts-\u003epch_pic_base = addr;\n+\treturn 0;\n }\n \n /* used by user space to get or set pch pic registers */\n@@ -444,7 +454,7 @@ static int kvm_pch_pic_create(struct kvm_device *dev, u32 type)\n \n \tret = kvm_setup_default_irq_routing(kvm);\n \tif (ret)\n-\t\treturn -ENOMEM;\n+\t\treturn ret;\n \n \ts = kzalloc_obj(struct loongarch_pch_pic);\n \tif (!s)\n@@ -483,6 +493,7 @@ static void kvm_pch_pic_destroy(struct kvm_device *dev)\n \n \tkvm = dev-\u003ekvm;\n \ts = kvm-\u003earch.pch_pic;\n+\tkvm-\u003earch.pch_pic = NULL;\n \t/* unregister pch pic device and free it's memory */\n \tmutex_lock(\u0026kvm-\u003eslots_lock);\n \tkvm_io_bus_unregister_dev(kvm, KVM_MMIO_BUS, \u0026s-\u003edevice);\ndiff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c\nindex 8e028be3f0a97..d931a5a802f62 100644\n--- a/arch/loongarch/kvm/vcpu.c\n+++ b/arch/loongarch/kvm/vcpu.c\n@@ -154,12 +154,13 @@ static void kvm_update_stolen_time(struct kvm_vcpu *vcpu)\n \tu32 version;\n \tu64 steal;\n \tgpa_t gpa;\n+\tu64 last_steal;\n \tstruct kvm_memslots *slots;\n \tstruct kvm_steal_time __user *st;\n \tstruct gfn_to_hva_cache *ghc;\n \n \tghc = \u0026vcpu-\u003earch.st.cache;\n-\tgpa = vcpu-\u003earch.st.guest_addr;\n+\tgpa = READ_ONCE(vcpu-\u003earch.st.guest_addr);\n \tif (!(gpa \u0026 KVM_STEAL_PHYS_VALID))\n \t\treturn;\n \n@@ -187,8 +188,14 @@ static void kvm_update_stolen_time(struct kvm_vcpu *vcpu)\n \tsmp_wmb();\n \n \tunsafe_get_user(steal, \u0026st-\u003esteal, out);\n-\tsteal += current-\u003esched_info.run_delay - vcpu-\u003earch.st.last_steal;\n-\tvcpu-\u003earch.st.last_steal = current-\u003esched_info.run_delay;\n+\t/* acquire pairs with the smp_wmb in the attr path */\n+\tsmp_rmb();\n+\tlast_steal = READ_ONCE(vcpu-\u003earch.st.last_steal);\n+\tif (!last_steal)\n+\t\t/* first update in vcpu context: rebase the counter */\n+\t\tlast_steal = current-\u003esched_info.run_delay;\n+\tsteal += current-\u003esched_info.run_delay - last_steal;\n+\tWRITE_ONCE(vcpu-\u003earch.st.last_steal, current-\u003esched_info.run_delay);\n \tunsafe_put_user(steal, \u0026st-\u003esteal, out);\n \n \tsmp_wmb();\n@@ -1122,7 +1129,7 @@ static int kvm_loongarch_pvtime_get_attr(struct kvm_vcpu *vcpu,\n \t\t\t|| attr-\u003eattr != KVM_LOONGARCH_VCPU_PVTIME_GPA)\n \t\treturn -ENXIO;\n \n-\tgpa = vcpu-\u003earch.st.guest_addr;\n+\tgpa = READ_ONCE(vcpu-\u003earch.st.guest_addr);\n \tif (put_user(gpa, user))\n \t\treturn -EFAULT;\n \n@@ -1197,7 +1204,7 @@ static int kvm_loongarch_pvtime_set_attr(struct kvm_vcpu *vcpu,\n \t\treturn -EINVAL;\n \n \tif (!(gpa \u0026 KVM_STEAL_PHYS_VALID)) {\n-\t\tvcpu-\u003earch.st.guest_addr = gpa;\n+\t\tWRITE_ONCE(vcpu-\u003earch.st.guest_addr, gpa);\n \t\treturn 0;\n \t}\n \n@@ -1208,8 +1215,10 @@ static int kvm_loongarch_pvtime_set_attr(struct kvm_vcpu *vcpu,\n \tsrcu_read_unlock(\u0026kvm-\u003esrcu, idx);\n \n \tif (!ret) {\n-\t\tvcpu-\u003earch.st.guest_addr = gpa;\n-\t\tvcpu-\u003earch.st.last_steal = current-\u003esched_info.run_delay;\n+\t\tWRITE_ONCE(vcpu-\u003earch.st.last_steal, 0);\n+\t\t/* publish the new address only after clearing the rebase sentinel */\n+\t\tsmp_wmb();\n+\t\tWRITE_ONCE(vcpu-\u003earch.st.guest_addr, gpa);\n \t\tkvm_make_request(KVM_REQ_STEAL_UPDATE, vcpu);\n \t}\n \n@@ -1800,7 +1809,7 @@ static void kvm_vcpu_set_pv_preempted(struct kvm_vcpu *vcpu)\n \tstruct kvm_memslots *slots;\n \tstruct kvm_steal_time __user *st;\n \n-\tgpa = vcpu-\u003earch.st.guest_addr;\n+\tgpa = READ_ONCE(vcpu-\u003earch.st.guest_addr);\n \tif (!(gpa \u0026 KVM_STEAL_PHYS_VALID))\n \t\treturn;\n \n"
}

core

null

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch series modifies KVM interrupt controller and vCPU stolen time handling exclusively within arch/loongarch/ (arch/loongarch/kvm/intc/* and arch/loongarch/kvm/vcpu.c). These code paths are specific to the LoongArch architecture and are not compiled or reachable on the target architecture (amd64).",
  "WorthFuzzing": false
}

You are an expert Linux kernel maintainer and security engineer.
Your job is to review a provided patch series and evaluate whether it warrants fuzzing with syzkaller.

IMPORTANT: The changes have ALREADY been applied and committed as the HEAD commit in
your workspace. Do NOT rely on internal assumptions. You must actively use your code access
tools to inspect the actual source code, callers, and surrounding context.

================================================================================
1. CORE TRIAGE PHILOSOPHY
================================================================================
The goal of patch fuzzing is to discover crashes, regressions, exposed latent bugs,
and newly triggered assertions introduced by the patch series.

- REACHABILITY IS THE PRIMARY GATE:
  Fuzzing can only discover bugs in code that can actually execute in standard virtualized
  environments (GCE or QEMU, utilizing software-emulated devices like USB gadgets, netdev, tun/tap).
  If the modified code is structurally unreachable (see Section 2), it MUST NOT be fuzzed,
  regardless of whether it adds assertions or complex logic.

- DO NOT BLINDLY TRUST "NO FUNCTIONAL CHANGE" (NFCI) OR "REFACTORING" CLAIMS:
  Patch authors routinely label changes as "cleanups", "refactorings", or state
  "No functional change intended". Do NOT take these claims at face value.
  Code refactorings that rearrange logic, introduce helper functions, or alter state management
  in core subsystems frequently introduce subtle semantic shifts or uncover latent kernel bugs.
  If reachable executable code is modified or refactored, it MUST be fuzzed.

- NEW OR MODIFIED ASSERTIONS IN REACHABLE CODE MUST BE FUZZED:
  When a patch introduces or modifies runtime checks or assertions (e.g., WARN_ON*, VM_WARN_ON*,
  BUG_ON*, lockdep_assert*) in reachable code paths, it enforces new or stricter invariants.
  Even if the author believes the invariant always holds, fuzzing is essential to verify whether
  an unusual sequence of operations can violate it.

================================================================================
2. WHEN TO RETURN WorthFuzzing=false (NEGATIVE CRITERIA)
================================================================================
Return WorthFuzzing=false ONLY IF all modified code falls strictly into one or more of these categories:

- Non-kernel and non-executable changes:
  * Modifications to Documentation/, comments, or spelling fixes.
  * User-space directories, self-tests, samples, or scripts (e.g., tools/, samples/, scripts/, usr/)
    that do not affect the compiled kernel image (vmlinux) or kernel modules.
  * Purely decorative logging (e.g., message strings in pr_err, printk, dev_info) or tracepoints
    that do not alter control flow or data structures.
  * Build system or Kconfig changes that do not alter compiled C logic.
- Structurally unreachable hardware:
  * Vendor-specific PCIe switches, SmartNICs, or GPU drivers (e.g., mlxsw, pds_core, qed,
    ionic, amdgpu) requiring physical ASIC/PCIe cards not emulated in standard QEMU.
- Unreachable execution paths:
  * Driver teardown callbacks (.remove, .shutdown, pci_unregister_driver) executed only during
    physical PCI hot-unplug or manual sysfs driver unbinding.
  * Code paths exclusive to architectures other than the target architecture.

================================================================================
3. WHEN TO RETURN WorthFuzzing=true (POSITIVE CRITERIA)
================================================================================
Return WorthFuzzing=true whenever the patch touches reachable executable code, including:
- Core Subsystems:
  * Any logic modifications in memory management (mm/), synchronization/locking (kernel/locking/),
    BPF, scheduler, core networking, VFS, or syscall handling.
- Refactorings and Code Cleanups:
  * Any restructuring of reachable data structures, helper abstractions, or algorithm flows.
- Runtime Assertions and Defensive Checks:
  * Any introduction or alteration of assertions (WARN_ON*, VM_WARN_ON*, BUG_ON*, etc.) in reachable paths.
- Reachable Drivers and Protocols:
  * Drivers accessible via virtual buses (virtio, USB gadget, loopback, netlink, binder, sockets, etc.).

================================================================================
4. EXTRACTING FocusSymbols (PREVENTING DILUTION)
================================================================================
When WorthFuzzing=true, you must extract specific kernel functions into FocusSymbols to guide the fuzzer:

- AVOID UBIQUITOUS LIFECYCLE HOT-PATHS:
  Do NOT list generic, ubiquitous functions called by almost every program in the corpus
  (including, but not limited to: general memory allocators and deallocators, page fault
  and trap handlers, or core synchronization primitives; this is not an exhaustive list).
  Listing ubiquitous functions causes the fuzzer to classify thousands of unrelated tests as "focused",
  which severely dilutes fuzzing effort away from the actual changes.

- TARGET SPECIFIC FEATURE LOGIC AND ENTRYPOINTS:
  List functions that specifically implement the logic being added or altered, or direct API entrypoints
  for the subsystem feature under review.

- HANDLING STATIC INLINE FUNCTIONS IN HEADERS (.h):
  Compiler-inlined static functions (such as static inlines in mm/*.h or include/linux/*.h) lack
  distinct symbol addresses in vmlinux and cannot be targeted directly by symbol coverage filters.
  If the changes are primarily in static inline helpers, identify non-static, feature-specific caller
  functions in .c files that exercise them (avoiding ubiquitous lifecycle wrappers).

================================================================================
5. IDENTIFYING EnableConfigs
================================================================================
Identify any specific CONFIG_ options required to properly compile and reach the modified code:
- Inspect Kconfig files and #ifdef guards; do not make assumptions.
- Check "depends on" lines in Kconfig to include any non-standard parent subsystem configs needed.
- Strip any 'CONFIG_' prefix (e.g., return "NET_IPV4" instead of "CONFIG_NET_IPV4").
Prefer calling several tools at the same time to save round-trips.


Use set-results tool to provide results of the analysis.
It must be called exactly once before the final reply.
Ignore results of this tool.

Target architecture: amd64

For your convenience, here is the diff of the changes:
commit 9b3956f85f79ca42b4c49ce1233e64d918e6dd7b
Author: syz-cluster <triage@syzkaller.com>
Date:   Mon Sep 28 16:16:58 2026 +0000

    syz-cluster: applied patch under review

diff --git a/arch/loongarch/kvm/intc/dmsintc.c b/arch/loongarch/kvm/intc/dmsintc.c
index 89f980d867be7..d42567eba3ed6 100644
--- a/arch/loongarch/kvm/intc/dmsintc.c
+++ b/arch/loongarch/kvm/intc/dmsintc.c
@@ -70,8 +70,13 @@ int dmsintc_set_irq(struct kvm *kvm, u64 addr, int data, int level)
 	unsigned int irq, cpu;
 	struct kvm_vcpu *vcpu;
 
+	struct loongarch_dmsintc *s = kvm->arch.dmsintc;
+
+	if (!s)
+		return -EINVAL;
+
 	irq = (addr >> AVEC_IRQ_SHIFT) & AVEC_IRQ_MASK;
-	cpu = (addr >> AVEC_CPU_SHIFT) & kvm->arch.dmsintc->cpu_mask;
+	cpu = (addr >> AVEC_CPU_SHIFT) & s->cpu_mask;
 	if (cpu >= KVM_MAX_VCPUS)
 		return -EINVAL;
 	vcpu = kvm_get_vcpu_by_cpuid(kvm, cpu);
@@ -161,11 +166,14 @@ static int kvm_dmsintc_create(struct kvm_device *dev, u32 type)
 
 static void kvm_dmsintc_destroy(struct kvm_device *dev)
 {
+	struct loongarch_dmsintc *s;
 
 	if (!dev || !dev->kvm || !dev->kvm->arch.dmsintc)
 		return;
 
-	kfree(dev->kvm->arch.dmsintc);
+	s = dev->kvm->arch.dmsintc;
+	dev->kvm->arch.dmsintc = NULL;
+	kfree(s);
 	kfree(dev);
 }
 
diff --git a/arch/loongarch/kvm/intc/eiointc.c b/arch/loongarch/kvm/intc/eiointc.c
index 80f78e07c74a6..c68f9033638a1 100644
--- a/arch/loongarch/kvm/intc/eiointc.c
+++ b/arch/loongarch/kvm/intc/eiointc.c
@@ -112,8 +112,11 @@ static inline void eiointc_update_sw_coremap(struct loongarch_eiointc *s,
 void eiointc_set_irq(struct loongarch_eiointc *s, int irq, int level)
 {
 	unsigned long flags;
-	unsigned long *isr = (unsigned long *)s->isr;
+	unsigned long *isr;
 
+	if (!s)
+		return;
+	isr = (unsigned long *)s->isr;
 	spin_lock_irqsave(&s->lock, flags);
 	level ? __set_bit(irq, isr) : __clear_bit(irq, isr);
 	eiointc_update_irq(s, irq, level);
@@ -675,6 +678,7 @@ static void kvm_eiointc_destroy(struct kvm_device *dev)
 
 	kvm = dev->kvm;
 	eiointc = kvm->arch.eiointc;
+	kvm->arch.eiointc = NULL;
 	mutex_lock(&kvm->slots_lock);
 	kvm_io_bus_unregister_dev(kvm, KVM_IOCSR_BUS, &eiointc->device);
 	kvm_io_bus_unregister_dev(kvm, KVM_IOCSR_BUS, &eiointc->device_vext);
diff --git a/arch/loongarch/kvm/intc/ipi.c b/arch/loongarch/kvm/intc/ipi.c
index 7b333a4a0430f..6ee90c10827ad 100644
--- a/arch/loongarch/kvm/intc/ipi.c
+++ b/arch/loongarch/kvm/intc/ipi.c
@@ -444,6 +444,7 @@ static void kvm_ipi_destroy(struct kvm_device *dev)
 
 	kvm = dev->kvm;
 	ipi = kvm->arch.ipi;
+	kvm->arch.ipi = NULL;
 	mutex_lock(&kvm->slots_lock);
 	kvm_io_bus_unregister_dev(kvm, KVM_IOCSR_BUS, &ipi->device);
 	mutex_unlock(&kvm->slots_lock);
diff --git a/arch/loongarch/kvm/intc/pch_pic.c b/arch/loongarch/kvm/intc/pch_pic.c
index 2b63b0c2c7ce6..2baf9ecf0c8aa 100644
--- a/arch/loongarch/kvm/intc/pch_pic.c
+++ b/arch/loongarch/kvm/intc/pch_pic.c
@@ -48,6 +48,9 @@ void pch_pic_set_irq(struct loongarch_pch_pic *s, int irq, int level)
 {
 	u64 mask = BIT(irq);
 
+	if (!s)
+		return;
+
 	spin_lock(&s->lock);
 	if (level)
 		s->irr |= mask; /* set irr */
@@ -71,10 +74,11 @@ void pch_pic_set_irq(struct loongarch_pch_pic *s, int irq, int level)
 int pch_msi_set_irq(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *e, int level)
 {
 	u64 msg_addr = (((u64)e->msi.address_hi) << 32) | e->msi.address_lo;
+	struct loongarch_dmsintc *dmsintc = kvm->arch.dmsintc;
 
-	if (cpu_has_msgint && kvm->arch.dmsintc &&
-		msg_addr >= kvm->arch.dmsintc->msg_addr_base &&
-		msg_addr < (kvm->arch.dmsintc->msg_addr_base + kvm->arch.dmsintc->msg_addr_size)) {
+	if (cpu_has_msgint && dmsintc &&
+		msg_addr >= dmsintc->msg_addr_base &&
+		msg_addr < (dmsintc->msg_addr_base + dmsintc->msg_addr_size)) {
 		return dmsintc_set_irq(kvm, msg_addr, e->msi.data, level);
 	}
 
@@ -281,7 +285,10 @@ static int kvm_pch_pic_init(struct kvm_device *dev, u64 addr)
 	struct kvm_io_device *device;
 	struct loongarch_pch_pic *s = dev->kvm->arch.pch_pic;
 
-	s->pch_pic_base = addr;
+	if (!addr)
+		return -EINVAL;
+	if (s->pch_pic_base)
+		return -EBUSY;
 	device = &s->device;
 	/* init device by pch pic writing and reading ops */
 	kvm_iodevice_init(device, &kvm_pch_pic_ops);
@@ -289,8 +296,11 @@ static int kvm_pch_pic_init(struct kvm_device *dev, u64 addr)
 	/* register pch pic device */
 	ret = kvm_io_bus_register_dev(kvm, KVM_MMIO_BUS, addr, PCH_PIC_SIZE, device);
 	mutex_unlock(&kvm->slots_lock);
+	if (ret < 0)
+		return ret;
 
-	return (ret < 0) ? -EFAULT : 0;
+	s->pch_pic_base = addr;
+	return 0;
 }
 
 /* used by user space to get or set pch pic registers */
@@ -444,7 +454,7 @@ static int kvm_pch_pic_create(struct kvm_device *dev, u32 type)
 
 	ret = kvm_setup_default_irq_routing(kvm);
 	if (ret)
-		return -ENOMEM;
+		return ret;
 
 	s = kzalloc_obj(struct loongarch_pch_pic);
 	if (!s)
@@ -483,6 +493,7 @@ static void kvm_pch_pic_destroy(struct kvm_device *dev)
 
 	kvm = dev->kvm;
 	s = kvm->arch.pch_pic;
+	kvm->arch.pch_pic = NULL;
 	/* unregister pch pic device and free it's memory */
 	mutex_lock(&kvm->slots_lock);
 	kvm_io_bus_unregister_dev(kvm, KVM_MMIO_BUS, &s->device);
diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c
index 8e028be3f0a97..d931a5a802f62 100644
--- a/arch/loongarch/kvm/vcpu.c
+++ b/arch/loongarch/kvm/vcpu.c
@@ -154,12 +154,13 @@ static void kvm_update_stolen_time(struct kvm_vcpu *vcpu)
 	u32 version;
 	u64 steal;
 	gpa_t gpa;
+	u64 last_steal;
 	struct kvm_memslots *slots;
 	struct kvm_steal_time __user *st;
 	struct gfn_to_hva_cache *ghc;
 
 	ghc = &vcpu->arch.st.cache;
-	gpa = vcpu->arch.st.guest_addr;
+	gpa = READ_ONCE(vcpu->arch.st.guest_addr);
 	if (!(gpa & KVM_STEAL_PHYS_VALID))
 		return;
 
@@ -187,8 +188,14 @@ static void kvm_update_stolen_time(struct kvm_vcpu *vcpu)
 	smp_wmb();
 
 	unsafe_get_user(steal, &st->steal, out);
-	steal += current->sched_info.run_delay - vcpu->arch.st.last_steal;
-	vcpu->arch.st.last_steal = current->sched_info.run_delay;
+	/* acquire pairs with the smp_wmb in the attr path */
+	smp_rmb();
+	last_steal = READ_ONCE(vcpu->arch.st.last_steal);
+	if (!last_steal)
+		/* first update in vcpu context: rebase the counter */
+		last_steal = current->sched_info.run_delay;
+	steal += current->sched_info.run_delay - last_steal;
+	WRITE_ONCE(vcpu->arch.st.last_steal, current->sched_info.run_delay);
 	unsafe_put_user(steal, &st->steal, out);
 
 	smp_wmb();
@@ -1122,7 +1129,7 @@ static int kvm_loongarch_pvtime_get_attr(struct kvm_vcpu *vcpu,
 			|| attr->attr != KVM_LOONGARCH_VCPU_PVTIME_GPA)
 		return -ENXIO;
 
-	gpa = vcpu->arch.st.guest_addr;
+	gpa = READ_ONCE(vcpu->arch.st.guest_addr);
 	if (put_user(gpa, user))
 		return -EFAULT;
 
@@ -1197,7 +1204,7 @@ static int kvm_loongarch_pvtime_set_attr(struct kvm_vcpu *vcpu,
 		return -EINVAL;
 
 	if (!(gpa & KVM_STEAL_PHYS_VALID)) {
-		vcpu->arch.st.guest_addr = gpa;
+		WRITE_ONCE(vcpu->arch.st.guest_addr, gpa);
 		return 0;
 	}
 
@@ -1208,8 +1215,10 @@ static int kvm_loongarch_pvtime_set_attr(struct kvm_vcpu *vcpu,
 	srcu_read_unlock(&kvm->srcu, idx);
 
 	if (!ret) {
-		vcpu->arch.st.guest_addr = gpa;
-		vcpu->arch.st.last_steal = current->sched_info.run_delay;
+		WRITE_ONCE(vcpu->arch.st.last_steal, 0);
+		/* publish the new address only after clearing the rebase sentinel */
+		smp_wmb();
+		WRITE_ONCE(vcpu->arch.st.guest_addr, gpa);
 		kvm_make_request(KVM_REQ_STEAL_UPDATE, vcpu);
 	}
 
@@ -1800,7 +1809,7 @@ static void kvm_vcpu_set_pv_preempted(struct kvm_vcpu *vcpu)
 	struct kvm_memslots *slots;
 	struct kvm_steal_time __user *st;
 
-	gpa = vcpu->arch.st.guest_addr;
+	gpa = READ_ONCE(vcpu->arch.st.guest_addr);
 	if (!(gpa & KVM_STEAL_PHYS_VALID))
 		return;
 

gemini-3.8-flash

null

null

							input: 6297
							output: 26
							thoughts: 316
						

**Fuzzing Evaluation: WorthFuzzing=false**

Okay, so the question is whether this patch series is worth fuzzing with syzkaller, targeting amd64. Let's break this down. First, I need to understand what's been changed. The patch touches: `arch/loongarch/kvm/intc/dmsintc.c`, `arch/loongarch/kvm/intc/eiointc.c`, `arch/loongarch/kvm/intc/ipi.c`, `arch/loongarch/kvm/intc/pch_pic.c`, and `arch/loongarch/kvm/vcpu.c`. Hold on a minute... every single file is under `arch/loongarch/`.

The instructions state the target architecture is amd64. According to the instructions, I *must* return `WorthFuzzing=false` if all the modified code strictly falls into specific categories, particularly: "Code paths exclusive to architectures other than the target architecture".

Hmm... it's a pretty straightforward call here. Since the changes are exclusively within the `loongarch` architecture directory, and the target is amd64, I need to confirm there aren't any sneaky, non-`loongarch` files. Let me quickly double-check with git status/diff using the tooling. Just to be absolutely sure, it's worth checking for any *possible* cross-architecture dependencies. But based on the initial inspection, it looks like a clear case for setting `WorthFuzzing=false`.

{
  "Expression": ".*",
  "PathPrefix": "arch/loongarch"
}

{
  "Output": "\nFull output is too long, showing 500 out of 55291 lines.\nUse more precise expression if possible.\n\narch/loongarch/Kbuild:1:obj-y += kernel/\narch/loongarch/Kbuild:2:obj-y += mm/\narch/loongarch/Kbuild:3:obj-y += net/\narch/loongarch/Kbuild:4:obj-y += vdso/\narch/loongarch/Kbuild:5:\narch/loongarch/Kbuild:6:obj-$(subst m,y,$(CONFIG_KVM)) += kvm/\narch/loongarch/Kbuild:7:\narch/loongarch/Kbuild:8:# for cleaning\narch/loongarch/Kbuild:9:subdir- += boot\n--\narch/loongarch/Kconfig:1:# SPDX-License-Identifier: GPL-2.0\narch/loongarch/Kconfig:2:config LOONGARCH\narch/loongarch/Kconfig:3:\tbool\narch/loongarch/Kconfig:4:\tdefault y\narch/loongarch/Kconfig:5:\tselect ACPI\narch/loongarch/Kconfig:6:\tselect ACPI_GENERIC_GSI if ACPI\narch/loongarch/Kconfig:7:\tselect ACPI_MCFG if ACPI\narch/loongarch/Kconfig:8:\tselect ACPI_HOTPLUG_CPU if ACPI_PROCESSOR \u0026\u0026 HOTPLUG_CPU\narch/loongarch/Kconfig:9:\tselect ACPI_PPTT if ACPI\narch/loongarch/Kconfig:10:\tselect ACPI_SYSTEM_POWER_STATES_SUPPORT\tif ACPI\narch/loongarch/Kconfig:11:\tselect ARCH_BINFMT_ELF_STATE\narch/loongarch/Kconfig:12:\tselect ARCH_NEEDS_DEFER_KASAN\narch/loongarch/Kconfig:13:\tselect ARCH_DISABLE_KASAN_INLINE\narch/loongarch/Kconfig:14:\tselect ARCH_ENABLE_MEMORY_HOTPLUG\narch/loongarch/Kconfig:15:\tselect ARCH_HAS_PMD_SOFTLEAVES if TRANSPARENT_HUGEPAGE\narch/loongarch/Kconfig:16:\tselect ARCH_HAS_ACPI_TABLE_UPGRADE\tif ACPI\narch/loongarch/Kconfig:17:\tselect ARCH_HAS_CPU_FINALIZE_INIT\narch/loongarch/Kconfig:18:\tselect ARCH_HAS_CURRENT_STACK_POINTER\narch/loongarch/Kconfig:19:\tselect ARCH_HAS_DEBUG_VM_PGTABLE\narch/loongarch/Kconfig:20:\tselect ARCH_HAS_FAST_MULTIPLIER\narch/loongarch/Kconfig:21:\tselect ARCH_HAS_FORTIFY_SOURCE\narch/loongarch/Kconfig:22:\tselect ARCH_HAS_KCOV\narch/loongarch/Kconfig:23:\tselect ARCH_HAS_KERNEL_FPU_SUPPORT if 64BIT \u0026\u0026 CPU_HAS_FPU\narch/loongarch/Kconfig:24:\tselect ARCH_HAS_NMI_SAFE_THIS_CPU_OPS\narch/loongarch/Kconfig:25:\tselect ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE\narch/loongarch/Kconfig:26:\tselect ARCH_HAS_PREEMPT_LAZY\narch/loongarch/Kconfig:27:\tselect ARCH_HAS_PTE_SPECIAL if 64BIT\narch/loongarch/Kconfig:28:\tselect ARCH_HAS_SET_MEMORY\narch/loongarch/Kconfig:29:\tselect ARCH_HAS_SET_DIRECT_MAP\narch/loongarch/Kconfig:30:\tselect ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST\narch/loongarch/Kconfig:31:\tselect ARCH_HAS_UBSAN\narch/loongarch/Kconfig:32:\tselect ARCH_HAS_VDSO_ARCH_DATA\narch/loongarch/Kconfig:33:\tselect ARCH_INLINE_READ_LOCK if !PREEMPTION\narch/loongarch/Kconfig:34:\tselect ARCH_INLINE_READ_LOCK_BH if !PREEMPTION\narch/loongarch/Kconfig:35:\tselect ARCH_INLINE_READ_LOCK_IRQ if !PREEMPTION\narch/loongarch/Kconfig:36:\tselect ARCH_INLINE_READ_LOCK_IRQSAVE if !PREEMPTION\narch/loongarch/Kconfig:37:\tselect ARCH_INLINE_READ_UNLOCK if !PREEMPTION\narch/loongarch/Kconfig:38:\tselect ARCH_INLINE_READ_UNLOCK_BH if !PREEMPTION\narch/loongarch/Kconfig:39:\tselect ARCH_INLINE_READ_UNLOCK_IRQ if !PREEMPTION\narch/loongarch/Kconfig:40:\tselect ARCH_INLINE_READ_UNLOCK_IRQRESTORE if !PREEMPTION\narch/loongarch/Kconfig:41:\tselect ARCH_INLINE_WRITE_LOCK if !PREEMPTION\narch/loongarch/Kconfig:42:\tselect ARCH_INLINE_WRITE_LOCK_BH if !PREEMPTION\narch/loongarch/Kconfig:43:\tselect ARCH_INLINE_WRITE_LOCK_IRQ if !PREEMPTION\narch/loongarch/Kconfig:44:\tselect ARCH_INLINE_WRITE_LOCK_IRQSAVE if !PREEMPTION\narch/loongarch/Kconfig:45:\tselect ARCH_INLINE_WRITE_UNLOCK if !PREEMPTION\narch/loongarch/Kconfig:46:\tselect ARCH_INLINE_WRITE_UNLOCK_BH if !PREEMPTION\narch/loongarch/Kconfig:47:\tselect ARCH_INLINE_WRITE_UNLOCK_IRQ if !PREEMPTION\narch/loongarch/Kconfig:48:\tselect ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE if !PREEMPTION\narch/loongarch/Kconfig:49:\tselect ARCH_INLINE_SPIN_TRYLOCK if !PREEMPTION\narch/loongarch/Kconfig:50:\tselect ARCH_INLINE_SPIN_TRYLOCK_BH if !PREEMPTION\narch/loongarch/Kconfig:51:\tselect ARCH_INLINE_SPIN_LOCK if !PREEMPTION\narch/loongarch/Kconfig:52:\tselect ARCH_INLINE_SPIN_LOCK_BH if !PREEMPTION\narch/loongarch/Kconfig:53:\tselect ARCH_INLINE_SPIN_LOCK_IRQ if !PREEMPTION\narch/loongarch/Kconfig:54:\tselect ARCH_INLINE_SPIN_LOCK_IRQSAVE if !PREEMPTION\narch/loongarch/Kconfig:55:\tselect ARCH_INLINE_SPIN_UNLOCK if !PREEMPTION\narch/loongarch/Kconfig:56:\tselect ARCH_INLINE_SPIN_UNLOCK_BH if !PREEMPTION\narch/loongarch/Kconfig:57:\tselect ARCH_INLINE_SPIN_UNLOCK_IRQ if !PREEMPTION\narch/loongarch/Kconfig:58:\tselect ARCH_INLINE_SPIN_UNLOCK_IRQRESTORE if !PREEMPTION\narch/loongarch/Kconfig:59:\tselect ARCH_KEEP_MEMBLOCK\narch/loongarch/Kconfig:60:\tselect ARCH_MIGHT_HAVE_PC_PARPORT\narch/loongarch/Kconfig:61:\tselect ARCH_MIGHT_HAVE_PC_SERIO\narch/loongarch/Kconfig:62:\tselect ARCH_STACKWALK\narch/loongarch/Kconfig:63:\tselect ARCH_SUPPORTS_ACPI\narch/loongarch/Kconfig:64:\tselect ARCH_SUPPORTS_ATOMIC_RMW\narch/loongarch/Kconfig:65:\tselect ARCH_SUPPORTS_HUGETLBFS if 64BIT\narch/loongarch/Kconfig:66:\tselect ARCH_SUPPORTS_INT128 if CC_HAS_INT128\narch/loongarch/Kconfig:67:\tselect ARCH_SUPPORTS_LTO_CLANG\narch/loongarch/Kconfig:68:\tselect ARCH_SUPPORTS_LTO_CLANG_THIN\narch/loongarch/Kconfig:69:\tselect ARCH_SUPPORTS_MSEAL_SYSTEM_MAPPINGS\narch/loongarch/Kconfig:70:\tselect ARCH_HAS_PTE_PROTNONE if 64BIT\narch/loongarch/Kconfig:71:\tselect ARCH_SUPPORTS_NUMA_BALANCING if NUMA\narch/loongarch/Kconfig:72:\tselect ARCH_SUPPORTS_PER_VMA_LOCK\narch/loongarch/Kconfig:73:\tselect ARCH_SUPPORTS_RT\narch/loongarch/Kconfig:74:\tselect ARCH_SUPPORTS_SCHED_SMT if SMP\narch/loongarch/Kconfig:75:\tselect ARCH_SUPPORTS_SCHED_MC  if SMP\narch/loongarch/Kconfig:76:\tselect ARCH_USE_BUILTIN_BSWAP\narch/loongarch/Kconfig:77:\tselect ARCH_USE_CMPXCHG_LOCKREF\narch/loongarch/Kconfig:78:\tselect ARCH_USE_MEMTEST\narch/loongarch/Kconfig:79:\tselect ARCH_USE_QUEUED_RWLOCKS\narch/loongarch/Kconfig:80:\tselect ARCH_USE_QUEUED_SPINLOCKS\narch/loongarch/Kconfig:81:\tselect ARCH_WANT_DEFAULT_BPF_JIT if HAVE_EBPF_JIT\narch/loongarch/Kconfig:82:\tselect ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT\narch/loongarch/Kconfig:83:\tselect ARCH_WANT_LD_ORPHAN_WARN\narch/loongarch/Kconfig:84:\tselect ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP if 64BIT\narch/loongarch/Kconfig:85:\tselect ARCH_WANTS_NO_INSTR\narch/loongarch/Kconfig:86:\tselect ARCH_WANTS_THP_SWAP if HAVE_ARCH_TRANSPARENT_HUGEPAGE\narch/loongarch/Kconfig:87:\tselect BUILDTIME_TABLE_SORT\narch/loongarch/Kconfig:88:\tselect COMMON_CLK\narch/loongarch/Kconfig:89:\tselect CPU_PM\narch/loongarch/Kconfig:90:\tselect EDAC_SUPPORT\narch/loongarch/Kconfig:91:\tselect EFI\narch/loongarch/Kconfig:92:\tselect GENERIC_ATOMIC64 if 32BIT\narch/loongarch/Kconfig:93:\tselect GENERIC_CLOCKEVENTS\narch/loongarch/Kconfig:94:\tselect GENERIC_CMOS_UPDATE\narch/loongarch/Kconfig:95:\tselect GENERIC_CPU_AUTOPROBE\narch/loongarch/Kconfig:96:\tselect GENERIC_CPU_DEVICES\narch/loongarch/Kconfig:97:\tselect GENERIC_CPU_VULNERABILITIES\narch/loongarch/Kconfig:98:\tselect GENERIC_ENTRY\narch/loongarch/Kconfig:99:\tselect GENERIC_GETTIMEOFDAY if 64BIT\narch/loongarch/Kconfig:100:\tselect GENERIC_IOREMAP if !ARCH_IOREMAP\narch/loongarch/Kconfig:101:\tselect GENERIC_IRQ_MATRIX_ALLOCATOR\narch/loongarch/Kconfig:102:\tselect GENERIC_IRQ_MULTI_HANDLER\narch/loongarch/Kconfig:103:\tselect GENERIC_IRQ_PROBE\narch/loongarch/Kconfig:104:\tselect GENERIC_IRQ_SHOW\narch/loongarch/Kconfig:105:\tselect GENERIC_LIB_ASHLDI3\narch/loongarch/Kconfig:106:\tselect GENERIC_LIB_ASHRDI3\narch/loongarch/Kconfig:107:\tselect GENERIC_LIB_CMPDI2\narch/loongarch/Kconfig:108:\tselect GENERIC_LIB_LSHRDI3\narch/loongarch/Kconfig:109:\tselect GENERIC_LIB_UCMPDI2\narch/loongarch/Kconfig:110:\tselect GENERIC_LIB_DEVMEM_IS_ALLOWED\narch/loongarch/Kconfig:111:\tselect GENERIC_PCI_IOMAP\narch/loongarch/Kconfig:112:\tselect GENERIC_SCHED_CLOCK\narch/loongarch/Kconfig:113:\tselect GENERIC_SMP_IDLE_THREAD\narch/loongarch/Kconfig:114:\tselect GPIOLIB\narch/loongarch/Kconfig:115:\tselect HAS_IOPORT\narch/loongarch/Kconfig:116:\tselect HAVE_ALIGNED_STRUCT_PAGE if 64BIT\narch/loongarch/Kconfig:117:\tselect HAVE_ARCH_AUDITSYSCALL\narch/loongarch/Kconfig:118:\tselect HAVE_ARCH_BITREVERSE if 64BIT \u0026\u0026 BITREVERSE\narch/loongarch/Kconfig:119:\tselect HAVE_ARCH_JUMP_LABEL\narch/loongarch/Kconfig:120:\tselect HAVE_ARCH_JUMP_LABEL_RELATIVE\narch/loongarch/Kconfig:121:\tselect HAVE_ARCH_KASAN if 64BIT\narch/loongarch/Kconfig:122:\tselect HAVE_ARCH_KFENCE if 64BIT\narch/loongarch/Kconfig:123:\tselect HAVE_ARCH_KGDB if PERF_EVENTS\narch/loongarch/Kconfig:124:\tselect HAVE_ARCH_KSTACK_ERASE\narch/loongarch/Kconfig:125:\tselect HAVE_ARCH_MMAP_RND_BITS if MMU\narch/loongarch/Kconfig:126:\tselect HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET\narch/loongarch/Kconfig:127:\tselect HAVE_ARCH_SECCOMP\narch/loongarch/Kconfig:128:\tselect HAVE_ARCH_SECCOMP_FILTER\narch/loongarch/Kconfig:129:\tselect HAVE_ARCH_TRACEHOOK\narch/loongarch/Kconfig:130:\tselect HAVE_ARCH_TRANSPARENT_HUGEPAGE if 64BIT\narch/loongarch/Kconfig:131:\tselect HAVE_ARCH_USERFAULTFD_MINOR if 64BIT \u0026\u0026 USERFAULTFD\narch/loongarch/Kconfig:132:\tselect HAVE_ASM_MODVERSIONS\narch/loongarch/Kconfig:133:\tselect HAVE_CMPXCHG_DOUBLE\narch/loongarch/Kconfig:134:\tselect HAVE_CMPXCHG_LOCAL\narch/loongarch/Kconfig:135:\tselect HAVE_CONTEXT_TRACKING_USER\narch/loongarch/Kconfig:136:\tselect HAVE_C_RECORDMCOUNT\narch/loongarch/Kconfig:137:\tselect HAVE_DEBUG_KMEMLEAK\narch/loongarch/Kconfig:138:\tselect HAVE_DEBUG_STACKOVERFLOW\narch/loongarch/Kconfig:139:\tselect HAVE_DMA_CONTIGUOUS\narch/loongarch/Kconfig:140:\tselect HAVE_DYNAMIC_FTRACE\narch/loongarch/Kconfig:141:\tselect HAVE_DYNAMIC_FTRACE_WITH_ARGS\narch/loongarch/Kconfig:142:\tselect HAVE_FTRACE_REGS_HAVING_PT_REGS\narch/loongarch/Kconfig:143:\tselect HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS\narch/loongarch/Kconfig:144:\tselect HAVE_DYNAMIC_FTRACE_WITH_REGS\narch/loongarch/Kconfig:145:\tselect HAVE_EBPF_JIT if 64BIT\narch/loongarch/Kconfig:146:\tselect HAVE_EFFICIENT_UNALIGNED_ACCESS if !ARCH_STRICT_ALIGN\narch/loongarch/Kconfig:147:\tselect HAVE_EXIT_THREAD\narch/loongarch/Kconfig:148:\tselect HAVE_GENERIC_TIF_BITS\narch/loongarch/Kconfig:149:\tselect HAVE_GUP_FAST\narch/loongarch/Kconfig:150:\tselect HAVE_FTRACE_GRAPH_FUNC\narch/loongarch/Kconfig:151:\tselect HAVE_FUNCTION_ARG_ACCESS_API\narch/loongarch/Kconfig:152:\tselect HAVE_FUNCTION_ERROR_INJECTION\narch/loongarch/Kconfig:153:\tselect HAVE_FUNCTION_GRAPH_FREGS\narch/loongarch/Kconfig:154:\tselect HAVE_FUNCTION_GRAPH_TRACER\narch/loongarch/Kconfig:155:\tselect HAVE_FUNCTION_TRACER\narch/loongarch/Kconfig:156:\tselect HAVE_GCC_PLUGINS\narch/loongarch/Kconfig:157:\tselect HAVE_HW_BREAKPOINT if PERF_EVENTS\narch/loongarch/Kconfig:158:\tselect HAVE_IOREMAP_PROT\narch/loongarch/Kconfig:159:\tselect HAVE_IRQ_EXIT_ON_IRQ_STACK\narch/loongarch/Kconfig:160:\tselect HAVE_IRQ_TIME_ACCOUNTING\narch/loongarch/Kconfig:161:\tselect HAVE_KPROBES\narch/loongarch/Kconfig:162:\tselect HAVE_KPROBES_ON_FTRACE\narch/loongarch/Kconfig:163:\tselect HAVE_KRETPROBES\narch/loongarch/Kconfig:164:\tselect HAVE_LIVEPATCH\narch/loongarch/Kconfig:165:\tselect HAVE_MOD_ARCH_SPECIFIC\narch/loongarch/Kconfig:166:\tselect HAVE_NMI\narch/loongarch/Kconfig:167:\tselect HAVE_OBJTOOL if AS_HAS_EXPLICIT_RELOCS \u0026\u0026 AS_HAS_THIN_ADD_SUB \u0026\u0026 64BIT\narch/loongarch/Kconfig:168:\tselect HAVE_PCI\narch/loongarch/Kconfig:169:\tselect HAVE_PERF_EVENTS if 64BIT\narch/loongarch/Kconfig:170:\tselect HAVE_PERF_REGS\narch/loongarch/Kconfig:171:\tselect HAVE_PERF_USER_STACK_DUMP\narch/loongarch/Kconfig:172:\tselect HAVE_POSIX_CPU_TIMERS_TASK_WORK\narch/loongarch/Kconfig:173:\tselect HAVE_PREEMPT_DYNAMIC_KEY\narch/loongarch/Kconfig:174:\tselect HAVE_REGS_AND_STACK_ACCESS_API\narch/loongarch/Kconfig:175:\tselect HAVE_RELIABLE_STACKTRACE if UNWINDER_ORC\narch/loongarch/Kconfig:176:\tselect HAVE_RETHOOK\narch/loongarch/Kconfig:177:\tselect HAVE_RSEQ\narch/loongarch/Kconfig:178:\tselect HAVE_RUST if !KASAN\narch/loongarch/Kconfig:179:\tselect HAVE_SAMPLE_FTRACE_DIRECT\narch/loongarch/Kconfig:180:\tselect HAVE_SAMPLE_FTRACE_DIRECT_MULTI\narch/loongarch/Kconfig:181:\tselect HAVE_SETUP_PER_CPU_AREA if NUMA\narch/loongarch/Kconfig:182:\tselect HAVE_STACK_VALIDATION if HAVE_OBJTOOL\narch/loongarch/Kconfig:183:\tselect HAVE_STACKPROTECTOR\narch/loongarch/Kconfig:184:\tselect HAVE_SYSCALL_TRACEPOINTS\narch/loongarch/Kconfig:185:\tselect HAVE_TIF_NOHZ\narch/loongarch/Kconfig:186:\tselect HAVE_VIRT_CPU_ACCOUNTING_GEN\narch/loongarch/Kconfig:187:\tselect HOTPLUG_SMT if HOTPLUG_CPU\narch/loongarch/Kconfig:188:\tselect IRQ_FORCED_THREADING\narch/loongarch/Kconfig:189:\tselect IRQ_LOONGARCH_CPU\narch/loongarch/Kconfig:190:\tselect LOCK_MM_AND_FIND_VMA\narch/loongarch/Kconfig:191:\tselect MMU_GATHER_MERGE_VMAS if MMU\narch/loongarch/Kconfig:192:\tselect MMU_GATHER_RCU_TABLE_FREE\narch/loongarch/Kconfig:193:\tselect MODULES_USE_ELF_RELA if MODULES\narch/loongarch/Kconfig:194:\tselect NEED_PER_CPU_EMBED_FIRST_CHUNK\narch/loongarch/Kconfig:195:\tselect NEED_PER_CPU_PAGE_FIRST_CHUNK\narch/loongarch/Kconfig:196:\tselect NUMA_MEMBLKS if NUMA\narch/loongarch/Kconfig:197:\tselect OF\narch/loongarch/Kconfig:198:\tselect OF_EARLY_FLATTREE\narch/loongarch/Kconfig:199:\tselect PCI\narch/loongarch/Kconfig:200:\tselect PCI_DOMAINS_GENERIC\narch/loongarch/Kconfig:201:\tselect PCI_ECAM if ACPI\narch/loongarch/Kconfig:202:\tselect PCI_LOONGSON\narch/loongarch/Kconfig:203:\tselect PCI_MSI_ARCH_FALLBACKS\narch/loongarch/Kconfig:204:\tselect PCI_QUIRKS\narch/loongarch/Kconfig:205:\tselect PERF_USE_VMALLOC\narch/loongarch/Kconfig:206:\tselect RTC_LIB\narch/loongarch/Kconfig:207:\tselect SPARSE_IRQ\narch/loongarch/Kconfig:208:\tselect SYSCTL_ARCH_UNALIGN_ALLOW\narch/loongarch/Kconfig:209:\tselect SYSCTL_ARCH_UNALIGN_NO_WARN\narch/loongarch/Kconfig:210:\tselect SYSCTL_EXCEPTION_TRACE\narch/loongarch/Kconfig:211:\tselect SWIOTLB if 64BIT\narch/loongarch/Kconfig:212:\tselect THREAD_INFO_IN_TASK\narch/loongarch/Kconfig:213:\tselect TRACE_IRQFLAGS_SUPPORT\narch/loongarch/Kconfig:214:\tselect USE_PERCPU_NUMA_NODE_ID\narch/loongarch/Kconfig:215:\tselect USER_STACKTRACE_SUPPORT\narch/loongarch/Kconfig:216:\tselect VDSO_DATASTORE\narch/loongarch/Kconfig:217:\tselect VDSO_GETRANDOM\narch/loongarch/Kconfig:218:\tselect ZONE_DMA32 if 64BIT\narch/loongarch/Kconfig:219:\narch/loongarch/Kconfig:220:menu \"Kernel type and options\"\narch/loongarch/Kconfig:221:\narch/loongarch/Kconfig:222:choice\narch/loongarch/Kconfig:223:\tprompt \"Kernel type\"\narch/loongarch/Kconfig:224:\tdefault 64BIT # Keep existing behavior\narch/loongarch/Kconfig:225:\narch/loongarch/Kconfig:226:config 32BIT\narch/loongarch/Kconfig:227:\tbool \"32-bit kernel\"\narch/loongarch/Kconfig:228:\thelp\narch/loongarch/Kconfig:229:\t  Select this option if you want to build a 32-bit kernel.\narch/loongarch/Kconfig:230:\narch/loongarch/Kconfig:231:config 64BIT\narch/loongarch/Kconfig:232:\tbool \"64-bit kernel\"\narch/loongarch/Kconfig:233:\thelp\narch/loongarch/Kconfig:234:\t  Select this option if you want to build a 64-bit kernel.\narch/loongarch/Kconfig:235:\narch/loongarch/Kconfig:236:endchoice\narch/loongarch/Kconfig:237:\narch/loongarch/Kconfig:238:if 32BIT\narch/loongarch/Kconfig:239:\narch/loongarch/Kconfig:240:choice\narch/loongarch/Kconfig:241:\tprompt \"32-bit kernel sub-type\"\narch/loongarch/Kconfig:242:\narch/loongarch/Kconfig:243:config 32BIT_REDUCED\narch/loongarch/Kconfig:244:\tbool \"32-bit kernel for LA32R\"\narch/loongarch/Kconfig:245:\thelp\narch/loongarch/Kconfig:246:\t  Select this option if you want to build a 32-bit kernel for\narch/loongarch/Kconfig:247:\t  LoongArch32 Reduced (LA32R).\narch/loongarch/Kconfig:248:\narch/loongarch/Kconfig:249:config 32BIT_STANDARD\narch/loongarch/Kconfig:250:\tbool \"32-bit kernel for LA32S\"\narch/loongarch/Kconfig:251:\thelp\narch/loongarch/Kconfig:252:\t  Select this option if you want to build a 32-bit kernel for\narch/loongarch/Kconfig:253:\t  LoongArch32 Standard (LA32S).\narch/loongarch/Kconfig:254:\narch/loongarch/Kconfig:255:endchoice\narch/loongarch/Kconfig:256:\narch/loongarch/Kconfig:257:endif\narch/loongarch/Kconfig:258:\narch/loongarch/Kconfig:259:config GENERIC_BUG\narch/loongarch/Kconfig:260:\tdef_bool y\narch/loongarch/Kconfig:261:\tdepends on BUG\narch/loongarch/Kconfig:262:\narch/loongarch/Kconfig:263:config GENERIC_BUG_RELATIVE_POINTERS\narch/loongarch/Kconfig:264:\tdef_bool y\narch/loongarch/Kconfig:265:\tdepends on GENERIC_BUG\narch/loongarch/Kconfig:266:\narch/loongarch/Kconfig:267:config GENERIC_CALIBRATE_DELAY\narch/loongarch/Kconfig:268:\tdef_bool y\narch/loongarch/Kconfig:269:\narch/loongarch/Kconfig:270:config GENERIC_CSUM\narch/loongarch/Kconfig:271:\tdef_bool y\narch/loongarch/Kconfig:272:\narch/loongarch/Kconfig:273:config GENERIC_HWEIGHT\narch/loongarch/Kconfig:274:\tdef_bool y\narch/loongarch/Kconfig:275:\narch/loongarch/Kconfig:276:config L1_CACHE_SHIFT\narch/loongarch/Kconfig:277:\tint\narch/loongarch/Kconfig:278:\tdefault \"6\"\narch/loongarch/Kconfig:279:\narch/loongarch/Kconfig:280:config LOCKDEP_SUPPORT\narch/loongarch/Kconfig:281:\tbool\narch/loongarch/Kconfig:282:\tdefault y\narch/loongarch/Kconfig:283:\narch/loongarch/Kconfig:284:config STACKTRACE_SUPPORT\narch/loongarch/Kconfig:285:\tbool\narch/loongarch/Kconfig:286:\tdefault y\narch/loongarch/Kconfig:287:\narch/loongarch/Kconfig:288:# MACH_LOONGSON32 and MACH_LOONGSON64 are deliberately carried over from the\narch/loongarch/Kconfig:289:# MIPS Loongson code, to preserve Loongson-specific code paths in drivers that\narch/loongarch/Kconfig:290:# are shared between architectures, and specifically expecting the symbols.\narch/loongarch/Kconfig:291:config MACH_LOONGSON32\narch/loongarch/Kconfig:292:\tdef_bool 32BIT\narch/loongarch/Kconfig:293:\narch/loongarch/Kconfig:294:config MACH_LOONGSON64\narch/loongarch/Kconfig:295:\tdef_bool 64BIT\narch/loongarch/Kconfig:296:\narch/loongarch/Kconfig:297:config FIX_EARLYCON_MEM\narch/loongarch/Kconfig:298:\tdef_bool !ARCH_IOREMAP\narch/loongarch/Kconfig:299:\narch/loongarch/Kconfig:300:config PGTABLE_2LEVEL\narch/loongarch/Kconfig:301:\tbool\narch/loongarch/Kconfig:302:\narch/loongarch/Kconfig:303:config PGTABLE_3LEVEL\narch/loongarch/Kconfig:304:\tbool\narch/loongarch/Kconfig:305:\narch/loongarch/Kconfig:306:config PGTABLE_4LEVEL\narch/loongarch/Kconfig:307:\tbool\narch/loongarch/Kconfig:308:\narch/loongarch/Kconfig:309:config PGTABLE_LEVELS\narch/loongarch/Kconfig:310:\tint\narch/loongarch/Kconfig:311:\tdefault 2 if PGTABLE_2LEVEL\narch/loongarch/Kconfig:312:\tdefault 3 if PGTABLE_3LEVEL\narch/loongarch/Kconfig:313:\tdefault 4 if PGTABLE_4LEVEL\narch/loongarch/Kconfig:314:\narch/loongarch/Kconfig:315:config SCHED_OMIT_FRAME_POINTER\narch/loongarch/Kconfig:316:\tbool\narch/loongarch/Kconfig:317:\tdefault y\narch/loongarch/Kconfig:318:\narch/loongarch/Kconfig:319:config AS_HAS_EXPLICIT_RELOCS\narch/loongarch/Kconfig:320:\tdef_bool $(as-instr,x:pcalau12i \\$t0$(comma)%pc_hi20(x))\narch/loongarch/Kconfig:321:\narch/loongarch/Kconfig:322:config AS_HAS_FCSR_CLASS\narch/loongarch/Kconfig:323:\tdef_bool $(as-instr,movfcsr2gr \\$t0$(comma)\\$fcsr0)\narch/loongarch/Kconfig:324:\narch/loongarch/Kconfig:325:config AS_HAS_THIN_ADD_SUB\narch/loongarch/Kconfig:326:\tdef_bool $(cc-option,-Wa$(comma)-mthin-add-sub) || AS_IS_LLVM\narch/loongarch/Kconfig:327:\narch/loongarch/Kconfig:328:config AS_HAS_LSX_EXTENSION\narch/loongarch/Kconfig:329:\tdef_bool $(as-instr,vld \\$vr0$(comma)\\$a0$(comma)0)\narch/loongarch/Kconfig:330:\narch/loongarch/Kconfig:331:config AS_HAS_LASX_EXTENSION\narch/loongarch/Kconfig:332:\tdef_bool $(as-instr,xvld \\$xr0$(comma)\\$a0$(comma)0)\narch/loongarch/Kconfig:333:\narch/loongarch/Kconfig:334:config AS_HAS_LBT_EXTENSION\narch/loongarch/Kconfig:335:\tdef_bool $(as-instr,movscr2gr \\$a0$(comma)\\$scr0)\narch/loongarch/Kconfig:336:\narch/loongarch/Kconfig:337:config AS_HAS_LVZ_EXTENSION\narch/loongarch/Kconfig:338:\tdef_bool $(as-instr,hvcl 0)\narch/loongarch/Kconfig:339:\narch/loongarch/Kconfig:340:config AS_HAS_SCQ_EXTENSION\narch/loongarch/Kconfig:341:\tdef_bool $(as-instr,sc.q \\$t0$(comma)\\$t1$(comma)\\$t2)\narch/loongarch/Kconfig:342:\narch/loongarch/Kconfig:343:config CC_HAS_ANNOTATE_TABLEJUMP\narch/loongarch/Kconfig:344:\tdef_bool $(cc-option,-mannotate-tablejump)\narch/loongarch/Kconfig:345:\narch/loongarch/Kconfig:346:config RUSTC_HAS_ANNOTATE_TABLEJUMP\narch/loongarch/Kconfig:347:\tdepends on RUST\narch/loongarch/Kconfig:348:\tdef_bool $(rustc-option,-Cllvm-args=--loongarch-annotate-tablejump)\narch/loongarch/Kconfig:349:\narch/loongarch/Kconfig:350:source \"kernel/Kconfig.hz\"\narch/loongarch/Kconfig:351:\narch/loongarch/Kconfig:352:config HIGHMEM\narch/loongarch/Kconfig:353:\tbool \"High Memory Support\"\narch/loongarch/Kconfig:354:\tdepends on 32BIT\narch/loongarch/Kconfig:355:\tselect KMAP_LOCAL\narch/loongarch/Kconfig:356:\narch/loongarch/Kconfig:357:choice\narch/loongarch/Kconfig:358:\tprompt \"Page Table Layout\"\narch/loongarch/Kconfig:359:\tdefault 16KB_2LEVEL if 32BIT\narch/loongarch/Kconfig:360:\tdefault 16KB_3LEVEL if 64BIT\narch/loongarch/Kconfig:361:\thelp\narch/loongarch/Kconfig:362:\t  Allows choosing the page table layout, which is a combination\narch/loongarch/Kconfig:363:\t  of page size and page table levels. The size of virtual memory\narch/loongarch/Kconfig:364:\t  address space are determined by the page table layout.\narch/loongarch/Kconfig:365:\narch/loongarch/Kconfig:366:config 4KB_2LEVEL\narch/loongarch/Kconfig:367:\tbool \"4KB with 2 levels\"\narch/loongarch/Kconfig:368:\tselect HAVE_PAGE_SIZE_4KB\narch/loongarch/Kconfig:369:\tselect PGTABLE_2LEVEL\narch/loongarch/Kconfig:370:\thelp\narch/loongarch/Kconfig:371:\t  This option selects 4KB page size with 2 level page tables, which\narch/loongarch/Kconfig:372:\t  support a maximum of 32 bits of application virtual memory.\narch/loongarch/Kconfig:373:\narch/loongarch/Kconfig:374:config 4KB_3LEVEL\narch/loongarch/Kconfig:375:\tbool \"4KB with 3 levels\"\narch/loongarch/Kconfig:376:\tdepends on 64BIT\narch/loongarch/Kconfig:377:\tselect HAVE_PAGE_SIZE_4KB\narch/loongarch/Kconfig:378:\tselect PGTABLE_3LEVEL\narch/loongarch/Kconfig:379:\thelp\narch/loongarch/Kconfig:380:\t  This option selects 4KB page size with 3 level page tables, which\narch/loongarch/Kconfig:381:\t  support a maximum of 39 bits of application virtual memory.\narch/loongarch/Kconfig:382:\narch/loongarch/Kconfig:383:config 4KB_4LEVEL\narch/loongarch/Kconfig:384:\tbool \"4KB with 4 levels\"\narch/loongarch/Kconfig:385:\tdepends on 64BIT\narch/loongarch/Kconfig:386:\tselect HAVE_PAGE_SIZE_4KB\narch/loongarch/Kconfig:387:\tselect PGTABLE_4LEVEL\narch/loongarch/Kconfig:388:\thelp\narch/loongarch/Kconfig:389:\t  This option selects 4KB page size with 4 level page tables, which\narch/loongarch/Kconfig:390:\t  support a maximum of 48 bits of application virtual memory.\narch/loongarch/Kconfig:391:\narch/loongarch/Kconfig:392:config 16KB_2LEVEL\narch/loongarch/Kconfig:393:\tbool \"16KB with 2 levels\"\narch/loongarch/Kconfig:394:\tselect HAVE_PAGE_SIZE_16KB\narch/loongarch/Kconfig:395:\tselect PGTABLE_2LEVEL\narch/loongarch/Kconfig:396:\thelp\narch/loongarch/Kconfig:397:\t  This option selects 16KB page size with 2 level page tables, which\narch/loongarch/Kconfig:398:\t  support a maximum of 36 bits of application virtual memory.\narch/loongarch/Kconfig:399:\narch/loongarch/Kconfig:400:config 16KB_3LEVEL\narch/loongarch/Kconfig:401:\tbool \"16KB with 3 levels\"\narch/loongarch/Kconfig:402:\tdepends on 64BIT\narch/loongarch/Kconfig:403:\tselect HAVE_PAGE_SIZE_16KB\narch/loongarch/Kconfig:404:\tselect PGTABLE_3LEVEL\narch/loongarch/Kconfig:405:\thelp\narch/loongarch/Kconfig:406:\t  This option selects 16KB page size with 3 level page tables, which\narch/loongarch/Kconfig:407:\t  support a maximum of 47 bits of application virtual memory.\narch/loongarch/Kconfig:408:\narch/loongarch/Kconfig:409:config 64KB_2LEVEL\narch/loongarch/Kconfig:410:\tbool \"64KB with 2 levels\"\narch/loongarch/Kconfig:411:\tselect HAVE_PAGE_SIZE_64KB\narch/loongarch/Kconfig:412:\tselect PGTABLE_2LEVEL\narch/loongarch/Kconfig:413:\thelp\narch/loongarch/Kconfig:414:\t  This option selects 64KB page size with 2 level page tables, which\narch/loongarch/Kconfig:415:\t  support a maximum of 42 bits of application virtual memory.\narch/loongarch/Kconfig:416:\narch/loongarch/Kconfig:417:config 64KB_3LEVEL\narch/loongarch/Kconfig:418:\tbool \"64KB with 3 levels\"\narch/loongarch/Kconfig:419:\tdepends on 64BIT\narch/loongarch/Kconfig:420:\tselect HAVE_PAGE_SIZE_64KB\narch/loongarch/Kconfig:421:\tselect PGTABLE_3LEVEL\narch/loongarch/Kconfig:422:\thelp\narch/loongarch/Kconfig:423:\t  This option selects 64KB page size with 3 level page tables, which\narch/loongarch/Kconfig:424:\t  support a maximum of 55 bits of application virtual memory.\narch/loongarch/Kconfig:425:\narch/loongarch/Kconfig:426:endchoice\narch/loongarch/Kconfig:427:\narch/loongarch/Kconfig:428:config CMDLINE\narch/loongarch/Kconfig:429:\tstring \"Built-in kernel command line\"\narch/loongarch/Kconfig:430:\thelp\narch/loongarch/Kconfig:431:\t  For most platforms, the arguments for the kernel's command line\narch/loongarch/Kconfig:432:\t  are provided at run-time, during boot. However, there are cases\narch/loongarch/Kconfig:433:\t  where either no arguments are being provided or the provided\narch/loongarch/Kconfig:434:\t  arguments are insufficient or even invalid.\narch/loongarch/Kconfig:435:\narch/loongarch/Kconfig:436:\t  When that occurs, it is possible to define a built-in command\narch/loongarch/Kconfig:437:\t  line here and choose how the kernel should use it later on.\narch/loongarch/Kconfig:438:\narch/loongarch/Kconfig:439:choice\narch/loongarch/Kconfig:440:\tprompt \"Kernel command line type\"\narch/loongarch/Kconfig:441:\tdefault CMDLINE_BOOTLOADER\narch/loongarch/Kconfig:442:\thelp\narch/loongarch/Kconfig:443:\t  Choose how the kernel will handle the provided built-in command\narch/loongarch/Kconfig:444:\t  line.\narch/loongarch/Kconfig:445:\narch/loongarch/Kconfig:446:config CMDLINE_BOOTLOADER\narch/loongarch/Kconfig:447:\tbool \"Use bootloader kernel arguments if available\"\narch/loongarch/Kconfig:448:\thelp\narch/loongarch/Kconfig:449:\t  Prefer the command-line passed by the boot loader if available.\narch/loongarch/Kconfig:450:\t  Use the built-in command line as fallback in case we get nothing\narch/loongarch/Kconfig:451:\t  during boot. This is the default behaviour.\narch/loongarch/Kconfig:452:\narch/loongarch/Kconfig:453:config CMDLINE_EXTEND\narch/loongarch/Kconfig:454:\tbool \"Use built-in to extend bootloader kernel arguments\"\narch/loongarch/Kconfig:455:\thelp\narch/loongarch/Kconfig:456:\t  The built-in command line will be appended to the command-\narch/loongarch/Kconfig:457:\t  line arguments provided during boot. This is useful in\narch/loongarch/Kconfig:458:\t  cases where the provided arguments are insufficient and\narch/loongarch/Kconfig:459:\t  you don't want to or cannot modify them.\narch/loongarch/Kconfig:460:\narch/loongarch/Kconfig:461:config CMDLINE_FORCE\narch/loongarch/Kconfig:462:\tbool \"Always use the built-in kernel command string\"\narch/loongarch/Kconfig:463:\thelp\narch/loongarch/Kconfig:464:\t  Always use the built-in command line, even if we get one during\narch/loongarch/Kconfig:465:\t  boot. This is useful in case you need to override the provided\narch/loongarch/Kconfig:466:\t  command line on systems where you don't have or want control\narch/loongarch/Kconfig:467:\t  over it.\narch/loongarch/Kconfig:468:\narch/loongarch/Kconfig:469:endchoice\narch/loongarch/Kconfig:470:\narch/loongarch/Kconfig:471:config BUILTIN_DTB\narch/loongarch/Kconfig:472:\tbool \"Enable built-in dtb in kernel\"\narch/loongarch/Kconfig:473:\tdepends on OF\narch/loongarch/Kconfig:474:\tselect GENERIC_BUILTIN_DTB\narch/loongarch/Kconfig:475:\thelp\narch/loongarch/Kconfig:476:\t  Some existing systems do not provide a canonical device tree to\narch/loongarch/Kconfig:477:\t  the kernel at boot time. Let's provide a device tree table in the\narch/loongarch/Kconfig:478:\t  kernel, keyed by the dts filename, containing the relevant DTBs.\narch/loongarch/Kconfig:479:\narch/loongarch/Kconfig:480:\t  Built-in DTBs are generic enough and can be used as references.\narch/loongarch/Kconfig:481:\narch/loongarch/Kconfig:482:config BUILTIN_DTB_NAME\narch/loongarch/Kconfig:483:\tstring \"Source file for built-in dtb\"\narch/loongarch/Kconfig:484:\tdepends on BUILTIN_DTB\narch/loongarch/Kconfig:485:\thelp\narch/loongarch/Kconfig:486:\t  Base name (without suffix, relative to arch/loongarch/boot/dts/)\narch/loongarch/Kconfig:487:\t  for the DTS file that will be used to produce the DTB linked into\narch/loongarch/Kconfig:488:\t  the kernel.\narch/loongarch/Kconfig:489:\narch/loongarch/Kconfig:490:config DMI\n\n"
}

gemini-3.8-flash

null

null

							input: 18619
							output: 107
							thoughts: 721
						

**Analyzing the Impact of a Git Commit for Fuzzing Eligibility**

Okay, let's break this down. First, I need to confirm which files were actually modified by this commit. I'll check the Git commit itself, maybe using `git grep` or `grepper` to quickly pinpoint the touched files. I can also look at the modified files. I might use a unique string from the patch, something like `kvm_loongarch_pvtime_set_attr` or `loongarch_dmsintc`, as a quick search term.

Based on the `diff` output, I see the following files were modified: `arch/loongarch/kvm/intc/dmsintc.c`, `arch/loongarch/kvm/intc/eiointc.c`, `arch/loongarch/kvm/intc/ipi.c`, `arch/loongarch/kvm/intc/pch_pic.c`, and `arch/loongarch/kvm/vcpu.c`. That's all contained within `arch/loongarch/kvm/`.

Now, the crucial question: is there any chance these files are compiled for `amd64`, the target architecture? Definitely not. The code residing in `arch/loongarch/` is, by definition, specific to the LoongArch architecture and compiled only when `ARCH=loongarch`. On `amd64` (x86_64), only code in `arch/x86/` or generic KVM code would be compiled. Structurally, this LoongArch code is unreachable on `amd64`.

Let's double-check the rules. Specifically, the "NEGATIVE CRITERIA" regarding `WorthFuzzing=false`. The rule says, in essence, that if all the modified code falls into "Unreachable execution paths", then return `WorthFuzzing=false`. This covers driver teardown and code exclusive to other architectures.

The target architecture is `amd64`. All modified code is located in `arch/loongarch/kvm/`: `arch/loongarch/kvm/intc/dmsintc.c`, `arch/loongarch/kvm/intc/eiointc.c`, `arch/loongarch/kvm/intc/ipi.c`, `arch/loongarch/kvm/intc/pch_pic.c`, and `arch/loongarch/kvm/vcpu.c`.

Since the code paths are strictly tied to the LoongArch architecture, and LoongArch is distinct from the target architecture, `amd64`, it's clear the changes are structurally unreachable on `amd64`. Therefore, I conclude `WorthFuzzing=false`.

Now, just to be thorough, I recall that when `WorthFuzzing=false`, the associated `EnableConfigs` and `FocusSymbols` must be empty (or null). Given my clear reasoning, an empty list is the appropriate value.

Finally, I'll call `set-results` to confirm this analysis.

{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch series modifies KVM interrupt controller and vCPU stolen time handling exclusively within arch/loongarch/ (arch/loongarch/kvm/intc/* and arch/loongarch/kvm/vcpu.c). These code paths are specific to the LoongArch architecture and are not compiled or reachable on the target architecture (amd64).",
  "WorthFuzzing": false
}

{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch series modifies KVM interrupt controller and vCPU stolen time handling exclusively within arch/loongarch/ (arch/loongarch/kvm/intc/* and arch/loongarch/kvm/vcpu.c). These code paths are specific to the LoongArch architecture and are not compiled or reachable on the target architecture (amd64).",
  "WorthFuzzing": false
}

{
  "WorthFuzzing": false
}

null