diff options
| author | Sean Christopherson <seanjc@google.com> | 2021-02-25 23:47:41 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-03-15 11:43:47 +0300 |
| commit | d6b87f256591cf6be78825db6a09a5218666e539 (patch) | |
| tree | 8dd2ee1d59dcb95bf03c7ab97ad2a459d5e60b7d /arch/x86/kvm/mmu/mmu.c | |
| parent | ec761cfd353f3b37072cda095d245c155c7cdb0f (diff) | |
| download | linux-d6b87f256591cf6be78825db6a09a5218666e539.tar.xz | |
KVM: x86/mmu: Co-locate code for setting various SPTE masks
Squish all the code for (re)setting the various SPTE masks into one
location. With the split code, it's not at all clear that the masks are
set once during module initialization. This will allow a future patch to
clean up initialization of the masks without shuffling code all over
tarnation.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210225204749.1512652-17-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu/mmu.c')
| -rw-r--r-- | arch/x86/kvm/mmu/mmu.c | 25 |
1 files changed, 0 insertions, 25 deletions
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 77b269c1c227..2e55f04de80a 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -5754,25 +5754,6 @@ static void mmu_destroy_caches(void) kmem_cache_destroy(mmu_page_header_cache); } -static void kvm_set_mmio_spte_mask(void) -{ - u64 mask; - - /* - * Set a reserved PA bit in MMIO SPTEs to generate page faults with - * PFEC.RSVD=1 on MMIO accesses. 64-bit PTEs (PAE, x86-64, and EPT - * paging) support a maximum of 52 bits of PA, i.e. if the CPU supports - * 52-bit physical addresses then there are no reserved PA bits in the - * PTEs and so the reserved PA approach must be disabled. - */ - if (shadow_phys_bits < 52) - mask = BIT_ULL(51) | PT_PRESENT_MASK; - else - mask = 0; - - kvm_mmu_set_mmio_spte_mask(mask, mask, ACC_WRITE_MASK | ACC_USER_MASK); -} - static bool get_nx_auto_mode(void) { /* Return true when CPU has the bug, and mitigations are ON */ @@ -5838,12 +5819,6 @@ int kvm_mmu_module_init(void) kvm_mmu_reset_all_pte_masks(); - kvm_set_mmio_spte_mask(); - - kvm_mmu_set_mask_ptes(PT_USER_MASK, PT_ACCESSED_MASK, - PT_DIRTY_MASK, PT64_NX_MASK, 0, - PT_PRESENT_MASK, 0, sme_me_mask); - pte_list_desc_cache = kmem_cache_create("pte_list_desc", sizeof(struct pte_list_desc), 0, SLAB_ACCOUNT, NULL); |