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| author | Sean Christopherson <seanjc@google.com> | 2023-02-16 18:41:13 +0300 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-03-17 03:19:51 +0300 |
| commit | f94db0c8b9fa50296d00e236e2416aea11186e18 (patch) | |
| tree | 5b09d5c5d1f54a3211a6e16f93b5d53178414383 /arch/x86/include/asm/kvm_host.h | |
| parent | e6722d9211b2aa5f195267faaa6858004b4f42a0 (diff) | |
| download | linux-f94db0c8b9fa50296d00e236e2416aea11186e18.tar.xz | |
KVM: x86/mmu: Sanity check input to kvm_mmu_free_roots()
Tweak KVM_MMU_ROOTS_ALL to precisely cover all current+previous root
flags, and add a sanity in kvm_mmu_free_roots() to verify that the set
of roots to free doesn't stray outside KVM_MMU_ROOTS_ALL.
Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
Link: https://lore.kernel.org/r/20230216154115.710033-8-jiangshanlai@gmail.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/include/asm/kvm_host.h')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index b7526c15501e..c23c49e97ce2 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -420,6 +420,10 @@ struct kvm_mmu_root_info { #define KVM_MMU_NUM_PREV_ROOTS 3 +#define KVM_MMU_ROOT_CURRENT BIT(0) +#define KVM_MMU_ROOT_PREVIOUS(i) BIT(1+i) +#define KVM_MMU_ROOTS_ALL (BIT(1 + KVM_MMU_NUM_PREV_ROOTS) - 1) + #define KVM_HAVE_MMU_RWLOCK struct kvm_mmu_page; @@ -1997,10 +2001,6 @@ static inline int __kvm_irq_line_state(unsigned long *irq_state, return !!(*irq_state); } -#define KVM_MMU_ROOT_CURRENT BIT(0) -#define KVM_MMU_ROOT_PREVIOUS(i) BIT(1+i) -#define KVM_MMU_ROOTS_ALL (~0UL) - int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level); void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id); |