diff options
| author | Liu, Jinsong <jinsong.liu@intel.com> | 2011-09-25 16:10:48 +0800 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2011-10-03 13:53:14 -0300 |
| commit | bfc2455ddbb41148494a084d15777e6bed7533c3 (patch) | |
| tree | 4f60ef4b70896fa8353c11e715c96bad6c403aa1 | |
| parent | d11cf8cc80d946dfc9a23597cd9a0bb1c487cfa7 (diff) | |
kvm: support TSC deadline MSR
KVM add emulation of lapic tsc deadline timer for guest.
This patch is co-operation work at qemu side.
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| -rw-r--r-- | target-i386/cpu.h | 4 | ||||
| -rw-r--r-- | target-i386/kvm.c | 14 | ||||
| -rw-r--r-- | target-i386/machine.c | 1 |
3 files changed, 18 insertions, 1 deletions
diff --git a/target-i386/cpu.h b/target-i386/cpu.h index ae36489a9a..a973f2e20c 100644 --- a/target-i386/cpu.h +++ b/target-i386/cpu.h @@ -283,6 +283,7 @@ #define MSR_IA32_APICBASE_BSP (1<<8) #define MSR_IA32_APICBASE_ENABLE (1<<11) #define MSR_IA32_APICBASE_BASE (0xfffff<<12) +#define MSR_IA32_TSCDEADLINE 0x6e0 #define MSR_MTRRcap 0xfe #define MSR_MTRRcap_VCNT 8 @@ -687,6 +688,7 @@ typedef struct CPUX86State { uint64_t async_pf_en_msr; uint64_t tsc; + uint64_t tsc_deadline; uint64_t mcg_status; @@ -947,7 +949,7 @@ uint64_t cpu_get_tsc(CPUX86State *env); #define cpu_list_id x86_cpu_list #define cpudef_setup x86_cpudef_setup -#define CPU_SAVE_VERSION 12 +#define CPU_SAVE_VERSION 13 /* MMU modes definitions */ #define MMU_MODE0_SUFFIX _kernel diff --git a/target-i386/kvm.c b/target-i386/kvm.c index b6eef047bf..90a6ffba02 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -59,6 +59,7 @@ const KVMCapabilityInfo kvm_arch_required_capabilities[] = { static bool has_msr_star; static bool has_msr_hsave_pa; +static bool has_msr_tsc_deadline; static bool has_msr_async_pf_en; static int lm_capable_kernel; @@ -568,6 +569,10 @@ static int kvm_get_supported_msrs(KVMState *s) has_msr_hsave_pa = true; continue; } + if (kvm_msr_list->indices[i] == MSR_IA32_TSCDEADLINE) { + has_msr_tsc_deadline = true; + continue; + } } } @@ -881,6 +886,9 @@ static int kvm_put_msrs(CPUState *env, int level) if (has_msr_hsave_pa) { kvm_msr_entry_set(&msrs[n++], MSR_VM_HSAVE_PA, env->vm_hsave); } + if (has_msr_tsc_deadline) { + kvm_msr_entry_set(&msrs[n++], MSR_IA32_TSCDEADLINE, env->tsc_deadline); + } #ifdef TARGET_X86_64 if (lm_capable_kernel) { kvm_msr_entry_set(&msrs[n++], MSR_CSTAR, env->cstar); @@ -1127,6 +1135,9 @@ static int kvm_get_msrs(CPUState *env) if (has_msr_hsave_pa) { msrs[n++].index = MSR_VM_HSAVE_PA; } + if (has_msr_tsc_deadline) { + msrs[n++].index = MSR_IA32_TSCDEADLINE; + } if (!env->tsc_valid) { msrs[n++].index = MSR_IA32_TSC; @@ -1195,6 +1206,9 @@ static int kvm_get_msrs(CPUState *env) case MSR_IA32_TSC: env->tsc = msrs[i].data; break; + case MSR_IA32_TSCDEADLINE: + env->tsc_deadline = msrs[i].data; + break; case MSR_VM_HSAVE_PA: env->vm_hsave = msrs[i].data; break; diff --git a/target-i386/machine.c b/target-i386/machine.c index 9aca8e0523..25fa97de4a 100644 --- a/target-i386/machine.c +++ b/target-i386/machine.c @@ -410,6 +410,7 @@ static const VMStateDescription vmstate_cpu = { VMSTATE_UINT64_V(xcr0, CPUState, 12), VMSTATE_UINT64_V(xstate_bv, CPUState, 12), VMSTATE_YMMH_REGS_VARS(ymmh_regs, CPUState, CPU_NB_REGS, 12), + VMSTATE_UINT64_V(tsc_deadline, CPUState, 13), VMSTATE_END_OF_LIST() /* The above list is not sorted /wrt version numbers, watch out! */ }, |