[PATCH 1/8] KVM: x86/mmu: Drop unused CMPXCHG macro from paging_tmpl.h

Sean Christopherson
2022-06-13T22:58:49Z

Drop the CMPXCHG macro from paging_tmpl.h, it's no longer used now that
KVM uses a common uaccess helper to do 8-byte CMPXCHG.

Fixes: f122dfe44768 ("KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits")
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
arch/x86/kvm/mmu/paging_tmpl.h | 6 ------
1 file changed, 6 deletions(-)

diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
index fe35d8fd3276..f595c4b8657f 100644
--- a/arch/x86/kvm/mmu/paging_tmpl.h
+++ b/arch/x86/kvm/mmu/paging_tmpl.h
@@ -34,7 +34,6 @@
#define PT_HAVE_ACCESSED_DIRTY(mmu) true
#ifdef CONFIG_X86_64
#define PT_MAX_FULL_LEVELS PT64_ROOT_MAX_LEVEL
- #define CMPXCHG "cmpxchgq"
#else
#define PT_MAX_FULL_LEVELS 2
#endif
@@ -51,7 +50,6 @@
#define PT_GUEST_DIRTY_SHIFT PT_DIRTY_SHIFT
#define PT_GUEST_ACCESSED_SHIFT PT_ACCESSED_SHIFT
#define PT_HAVE_ACCESSED_DIRTY(mmu) true
- #define CMPXCHG "cmpxchgl"
#elif PTTYPE == PTTYPE_EPT
#define pt_element_t u64
#define guest_walker guest_walkerEPT
@@ -64,9 +62,6 @@
#define PT_GUEST_DIRTY_SHIFT 9
#define PT_GUEST_ACCESSED_SHIFT 8
#define PT_HAVE_ACCESSED_DIRTY(mmu) (!(mmu)->cpu_role.base.ad_disabled)
- #ifdef CONFIG_X86_64
- #define CMPXCHG "cmpxchgq"
- #endif
#define PT_MAX_FULL_LEVELS PT64_ROOT_MAX_LEVEL
#else
#error Invalid PTTYPE value
@@ -1100,7 +1095,6 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
#undef PT_MAX_FULL_LEVELS
#undef gpte_to_gfn
#undef gpte_to_gfn_lvl
-#undef CMPXCHG
#undef PT_GUEST_ACCESSED_MASK
#undef PT_GUEST_DIRTY_MASK
#undef PT_GUEST_DIRTY_SHIFT
--
2.36.1.476.g0c4daa206d-goog