diff options
Diffstat (limited to 'arch/x86/kvm/x86.h')
| -rw-r--r-- | arch/x86/kvm/x86.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h index f2afa5fe48a6..007940faa5c6 100644 --- a/arch/x86/kvm/x86.h +++ b/arch/x86/kvm/x86.h @@ -179,6 +179,7 @@ int kvm_mtrr_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data); int kvm_mtrr_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); bool kvm_mtrr_check_gfn_range_consistency(struct kvm_vcpu *vcpu, gfn_t gfn, int page_num); +bool kvm_vector_hashing_enabled(void); #define KVM_SUPPORTED_XCR0 (XFEATURE_MASK_FP | XFEATURE_MASK_SSE \ | XFEATURE_MASK_YMM | XFEATURE_MASK_BNDREGS \ @@ -192,4 +193,19 @@ extern unsigned int min_timer_period_us; extern unsigned int lapic_timer_advance_ns; extern struct static_key kvm_no_apic_vcpu; + +/* Same "calling convention" as do_div: + * - divide (n << 32) by base + * - put result in n + * - return remainder + */ +#define do_shl32_div32(n, base) \ + ({ \ + u32 __quot, __rem; \ + asm("divl %2" : "=a" (__quot), "=d" (__rem) \ + : "rm" (base), "0" (0), "1" ((u32) n)); \ + n = __quot; \ + __rem; \ + }) + #endif |