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| author | Paolo Bonzini <pbonzini@redhat.com> | 2026-04-13 11:51:34 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2026-04-13 11:51:34 +0200 |
| commit | 276f81a4912157a018141dfe71ab0f40e575a796 (patch) | |
| tree | dd929b93a5af92cf70fc9a3894ed6047e81abfb6 /virt | |
| parent | ed86b06bb35f6ccd2b81995803b8ec93ab97955b (diff) | |
| parent | de0bfdc7137d5132b71dd1fe7aa3ca3df4d68241 (diff) | |
Merge tag 'kvm-x86-misc-7.1' of https://github.com/kvm-x86/linux into HEAD
KVM x86 misc changes for 7.1
- Advertise support for AVX512 Bit Matrix Multiply (BMM) when it's present in
hardware (no additional emulation/virtualization required).
- Immediately fail the build if a required #define is missing in one of KVM's
headers that is included multiple times.
- Reject SET_GUEST_DEBUG with -EBUSY if there's an already injected exception,
mostly to prevent syzkaller from abusing the uAPI to trigger WARNs, but also
because it can help prevent userspace from unintentionally crashing the VM.
- Exempt SMM from CPUID faulting on Intel, as per the spec.
- Misc hardening and cleanup changes.
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/kvm_main.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 9093251beb39..46d79fdde6f5 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -76,22 +76,22 @@ MODULE_DESCRIPTION("Kernel-based Virtual Machine (KVM) Hypervisor"); MODULE_LICENSE("GPL"); /* Architectures should define their poll value according to the halt latency */ -unsigned int halt_poll_ns = KVM_HALT_POLL_NS_DEFAULT; +unsigned int __read_mostly halt_poll_ns = KVM_HALT_POLL_NS_DEFAULT; module_param(halt_poll_ns, uint, 0644); EXPORT_SYMBOL_FOR_KVM_INTERNAL(halt_poll_ns); /* Default doubles per-vcpu halt_poll_ns. */ -unsigned int halt_poll_ns_grow = 2; +unsigned int __read_mostly halt_poll_ns_grow = 2; module_param(halt_poll_ns_grow, uint, 0644); EXPORT_SYMBOL_FOR_KVM_INTERNAL(halt_poll_ns_grow); /* The start value to grow halt_poll_ns from */ -unsigned int halt_poll_ns_grow_start = 10000; /* 10us */ +unsigned int __read_mostly halt_poll_ns_grow_start = 10000; /* 10us */ module_param(halt_poll_ns_grow_start, uint, 0644); EXPORT_SYMBOL_FOR_KVM_INTERNAL(halt_poll_ns_grow_start); /* Default halves per-vcpu halt_poll_ns. */ -unsigned int halt_poll_ns_shrink = 2; +unsigned int __read_mostly halt_poll_ns_shrink = 2; module_param(halt_poll_ns_shrink, uint, 0644); EXPORT_SYMBOL_FOR_KVM_INTERNAL(halt_poll_ns_shrink); @@ -99,7 +99,7 @@ EXPORT_SYMBOL_FOR_KVM_INTERNAL(halt_poll_ns_shrink); * Allow direct access (from KVM or the CPU) without MMU notifier protection * to unpinned pages. */ -static bool allow_unsafe_mappings; +static bool __ro_after_init allow_unsafe_mappings; module_param(allow_unsafe_mappings, bool, 0444); /* @@ -5574,7 +5574,7 @@ static struct miscdevice kvm_dev = { }; #ifdef CONFIG_KVM_GENERIC_HARDWARE_ENABLING -bool enable_virt_at_load = true; +bool __ro_after_init enable_virt_at_load = true; module_param(enable_virt_at_load, bool, 0444); EXPORT_SYMBOL_FOR_KVM_INTERNAL(enable_virt_at_load); |