[Qemu-devel] [PATCH 4/6] Revert "kvm: support TSC deadline MSR"

[Marcelo Tosatti <mtosatti@redhat.com>]

This reverts commit bfc2455ddbb41148494a084d15777e6bed7533c3.
New patch with subsections will follow.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---
 target-i386/cpu.h     |    4 +---
 target-i386/kvm.c     |   14 --------------
 target-i386/machine.c |    1 -
 3 files changed, 1 insertions(+), 18 deletions(-)

diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index a973f2e..ae36489 100644
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -283,7 +283,6 @@
 #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
@@ -688,7 +687,6 @@ typedef struct CPUX86State {
     uint64_t async_pf_en_msr;
 
     uint64_t tsc;
-    uint64_t tsc_deadline;
 
     uint64_t mcg_status;
 
@@ -949,7 +947,7 @@ uint64_t cpu_get_tsc(CPUX86State *env);
 #define cpu_list_id x86_cpu_list
 #define cpudef_setup	x86_cpudef_setup
 
-#define CPU_SAVE_VERSION 13
+#define CPU_SAVE_VERSION 12
 
 /* MMU modes definitions */
 #define MMU_MODE0_SUFFIX _kernel
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 90a6ffb..b6eef04 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -59,7 +59,6 @@ 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;
 
@@ -569,10 +568,6 @@ 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;
-                }
             }
         }
 
@@ -886,9 +881,6 @@ 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);
@@ -1135,9 +1127,6 @@ 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;
@@ -1206,9 +1195,6 @@ 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 25fa97d..9aca8e0 100644
--- a/target-i386/machine.c
+++ b/target-i386/machine.c
@@ -410,7 +410,6 @@ 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! */
     },
-- 
1.7.5.4