hvm: vpmu: Add support for AMD Family 15h processors

AMD Family 15h CPU mirrors legacy K7 performance monitor counters to
a new location, and adds 2 new counters. This patch updates HVM VPMU
to take advantage of the new counters.

Signed-off-by: Jacob Shin <jacob.shin@amd.com>

diff --git a/xen/arch/x86/hvm/svm/svm.c b/xen/arch/x86/hvm/svm/svm.c
index a0db4c0c6c8fcdd591c8b1f6a053f979e8a42c88..2d5bbfa7cca787a4bef4fafd331568a1023cc1cb 100644 (file)
--- a/xen/arch/x86/hvm/svm/svm.c
+++ b/xen/arch/x86/hvm/svm/svm.c
@@ -1235,6 +1235,18 @@ static int svm_msr_read_intercept(unsigned int msr, uint64_t *msr_content)
     case MSR_K7_EVNTSEL1:
     case MSR_K7_EVNTSEL2:
     case MSR_K7_EVNTSEL3:
+    case MSR_AMD_FAM15H_PERFCTR0:
+    case MSR_AMD_FAM15H_PERFCTR1:
+    case MSR_AMD_FAM15H_PERFCTR2:
+    case MSR_AMD_FAM15H_PERFCTR3:
+    case MSR_AMD_FAM15H_PERFCTR4:
+    case MSR_AMD_FAM15H_PERFCTR5:
+    case MSR_AMD_FAM15H_EVNTSEL0:
+    case MSR_AMD_FAM15H_EVNTSEL1:
+    case MSR_AMD_FAM15H_EVNTSEL2:
+    case MSR_AMD_FAM15H_EVNTSEL3:
+    case MSR_AMD_FAM15H_EVNTSEL4:
+    case MSR_AMD_FAM15H_EVNTSEL5:
         vpmu_do_rdmsr(msr, msr_content);
         break;
 
@@ -1333,6 +1345,18 @@ static int svm_msr_write_intercept(unsigned int msr, uint64_t msr_content)
     case MSR_K7_EVNTSEL1:
     case MSR_K7_EVNTSEL2:
     case MSR_K7_EVNTSEL3:
+    case MSR_AMD_FAM15H_PERFCTR0:
+    case MSR_AMD_FAM15H_PERFCTR1:
+    case MSR_AMD_FAM15H_PERFCTR2:
+    case MSR_AMD_FAM15H_PERFCTR3:
+    case MSR_AMD_FAM15H_PERFCTR4:
+    case MSR_AMD_FAM15H_PERFCTR5:
+    case MSR_AMD_FAM15H_EVNTSEL0:
+    case MSR_AMD_FAM15H_EVNTSEL1:
+    case MSR_AMD_FAM15H_EVNTSEL2:
+    case MSR_AMD_FAM15H_EVNTSEL3:
+    case MSR_AMD_FAM15H_EVNTSEL4:
+    case MSR_AMD_FAM15H_EVNTSEL5:
         vpmu_do_wrmsr(msr, msr_content);
         break;
 

diff --git a/xen/arch/x86/hvm/svm/vpmu.c b/xen/arch/x86/hvm/svm/vpmu.c
index be257834d42b7f10f9477d678c891668a97a0fef..2d320b182f2e87b8a1bb90deab2bf44a3778a220 100644 (file)
--- a/xen/arch/x86/hvm/svm/vpmu.c
+++ b/xen/arch/x86/hvm/svm/vpmu.c
@@ -36,7 +36,9 @@
 #include <public/hvm/save.h>
 #include <asm/hvm/vpmu.h>
 
-#define NUM_COUNTERS 4
+#define F10H_NUM_COUNTERS 4
+#define F15H_NUM_COUNTERS 6
+#define MAX_NUM_COUNTERS F15H_NUM_COUNTERS
 
 #define MSR_F10H_EVNTSEL_GO_SHIFT   40
 #define MSR_F10H_EVNTSEL_EN_SHIFT   22
@@ -47,6 +49,11 @@
 #define set_guest_mode(msr) (msr |= (1ULL << MSR_F10H_EVNTSEL_GO_SHIFT))
 #define is_overflowed(msr) (!((msr) & (1ULL << (MSR_F10H_COUNTER_LENGTH-1))))
 
+static int __read_mostly num_counters = 0;
+static u32 __read_mostly *counters = NULL;
+static u32 __read_mostly *ctrls = NULL;
+static bool_t __read_mostly k7_counters_mirrored = 0;
+
 /* PMU Counter MSRs. */
 u32 AMD_F10H_COUNTERS[] = {
     MSR_K7_PERFCTR0,
@@ -63,10 +70,28 @@ u32 AMD_F10H_CTRLS[] = {
     MSR_K7_EVNTSEL3
 };
 
+u32 AMD_F15H_COUNTERS[] = {
+    MSR_AMD_FAM15H_PERFCTR0,
+    MSR_AMD_FAM15H_PERFCTR1,
+    MSR_AMD_FAM15H_PERFCTR2,
+    MSR_AMD_FAM15H_PERFCTR3,
+    MSR_AMD_FAM15H_PERFCTR4,
+    MSR_AMD_FAM15H_PERFCTR5
+};
+
+u32 AMD_F15H_CTRLS[] = {
+    MSR_AMD_FAM15H_EVNTSEL0,
+    MSR_AMD_FAM15H_EVNTSEL1,
+    MSR_AMD_FAM15H_EVNTSEL2,
+    MSR_AMD_FAM15H_EVNTSEL3,
+    MSR_AMD_FAM15H_EVNTSEL4,
+    MSR_AMD_FAM15H_EVNTSEL5
+};
+
 /* storage for context switching */
 struct amd_vpmu_context {
-    u64 counters[NUM_COUNTERS];
-    u64 ctrls[NUM_COUNTERS];
+    u64 counters[MAX_NUM_COUNTERS];
+    u64 ctrls[MAX_NUM_COUNTERS];
     u32 hw_lapic_lvtpc;
 };
 
@@ -78,10 +103,45 @@ static inline int get_pmu_reg_type(u32 addr)
     if ( (addr >= MSR_K7_PERFCTR0) && (addr <= MSR_K7_PERFCTR3) )
         return MSR_TYPE_COUNTER;
 
+    if ( (addr >= MSR_AMD_FAM15H_EVNTSEL0) &&
+         (addr <= MSR_AMD_FAM15H_PERFCTR5 ) )
+    {
+        if (addr & 1)
+            return MSR_TYPE_COUNTER;
+        else
+            return MSR_TYPE_CTRL;
+    }
+
     /* unsupported registers */
     return -1;
 }
 
+static inline u32 get_fam15h_addr(u32 addr)
+{
+    switch ( addr )
+    {
+    case MSR_K7_PERFCTR0:
+        return MSR_AMD_FAM15H_PERFCTR0;
+    case MSR_K7_PERFCTR1:
+        return MSR_AMD_FAM15H_PERFCTR1;
+    case MSR_K7_PERFCTR2:
+        return MSR_AMD_FAM15H_PERFCTR2;
+    case MSR_K7_PERFCTR3:
+        return MSR_AMD_FAM15H_PERFCTR3;
+    case MSR_K7_EVNTSEL0:
+        return MSR_AMD_FAM15H_EVNTSEL0;
+    case MSR_K7_EVNTSEL1:
+        return MSR_AMD_FAM15H_EVNTSEL1;
+    case MSR_K7_EVNTSEL2:
+        return MSR_AMD_FAM15H_EVNTSEL2;
+    case MSR_K7_EVNTSEL3:
+        return MSR_AMD_FAM15H_EVNTSEL3;
+    default:
+        break;
+    }
+
+    return addr;
+}
 
 static int amd_vpmu_do_interrupt(struct cpu_user_regs *regs)
 {
@@ -110,12 +170,12 @@ static inline void context_restore(struct vcpu *v)
     struct vpmu_struct *vpmu = vcpu_vpmu(v);
     struct amd_vpmu_context *ctxt = vpmu->context;
 
-    for ( i = 0; i < NUM_COUNTERS; i++ )
-        wrmsrl(AMD_F10H_CTRLS[i], ctxt->ctrls[i]);
+    for ( i = 0; i < num_counters; i++ )
+        wrmsrl(ctrls[i], ctxt->ctrls[i]);
 
-    for ( i = 0; i < NUM_COUNTERS; i++ )
+    for ( i = 0; i < num_counters; i++ )
     {
-        wrmsrl(AMD_F10H_COUNTERS[i], ctxt->counters[i]);
+        wrmsrl(counters[i], ctxt->counters[i]);
 
         /* Force an interrupt to allow guest reset the counter,
         if the value is positive */
@@ -147,11 +207,11 @@ static inline void context_save(struct vcpu *v)
     struct vpmu_struct *vpmu = vcpu_vpmu(v);
     struct amd_vpmu_context *ctxt = vpmu->context;
 
-    for ( i = 0; i < NUM_COUNTERS; i++ )
-        rdmsrl(AMD_F10H_COUNTERS[i], ctxt->counters[i]);
+    for ( i = 0; i < num_counters; i++ )
+        rdmsrl(counters[i], ctxt->counters[i]);
 
-    for ( i = 0; i < NUM_COUNTERS; i++ )
-        rdmsrl(AMD_F10H_CTRLS[i], ctxt->ctrls[i]);
+    for ( i = 0; i < num_counters; i++ )
+        rdmsrl(ctrls[i], ctxt->ctrls[i]);
 }
 
 static void amd_vpmu_save(struct vcpu *v)
@@ -175,12 +235,18 @@ static void context_update(unsigned int msr, u64 msr_content)
     struct vpmu_struct *vpmu = vcpu_vpmu(v);
     struct amd_vpmu_context *ctxt = vpmu->context;
 
-    for ( i = 0; i < NUM_COUNTERS; i++ )
-        if ( msr == AMD_F10H_COUNTERS[i] )
+    if ( k7_counters_mirrored &&
+        ((msr >= MSR_K7_EVNTSEL0) && (msr <= MSR_K7_PERFCTR3)) )
+    {
+        msr = get_fam15h_addr(msr);
+    }
+
+    for ( i = 0; i < num_counters; i++ )
+        if ( msr == counters[i] )
             ctxt->counters[i] = msr_content;
 
-    for ( i = 0; i < NUM_COUNTERS; i++ )
-        if ( msr == AMD_F10H_CTRLS[i] )
+    for ( i = 0; i < num_counters; i++ )
+        if ( msr == ctrls[i] )
             ctxt->ctrls[i] = msr_content;
 
     ctxt->hw_lapic_lvtpc = apic_read(APIC_LVTPC);
@@ -235,10 +301,31 @@ static void amd_vpmu_initialise(struct vcpu *v)
 {
     struct amd_vpmu_context *ctxt = NULL;
     struct vpmu_struct *vpmu = vcpu_vpmu(v);
+    __u8 family = current_cpu_data.x86;
 
     if ( vpmu->flags & VPMU_CONTEXT_ALLOCATED )
         return;
 
+    if ( counters == NULL )
+    {
+         switch ( family )
+        {
+        case 0x15:
+            num_counters = F15H_NUM_COUNTERS;
+            counters = AMD_F15H_COUNTERS;
+            ctrls = AMD_F15H_CTRLS;
+            k7_counters_mirrored = 1;
+            break;
+        case 0x10:
+        default:
+            num_counters = F10H_NUM_COUNTERS;
+            counters = AMD_F10H_COUNTERS;
+            ctrls = AMD_F10H_CTRLS;
+            k7_counters_mirrored = 0;
+            break;
+        }
+    }
+
     ctxt = xmalloc_bytes(sizeof(struct amd_vpmu_context));
 
     if ( !ctxt )

diff --git a/xen/arch/x86/hvm/vpmu.c b/xen/arch/x86/hvm/vpmu.c
index 657d2ff3b23ce01088e3c591988ef7739140436e..7e03525b2f2330f34171a92fdc719195303e4a15 100644 (file)
--- a/xen/arch/x86/hvm/vpmu.c
+++ b/xen/arch/x86/hvm/vpmu.c
@@ -101,6 +101,7 @@ void vpmu_initialise(struct vcpu *v)
         switch ( family )
         {
         case 0x10:
+        case 0x15:
             vpmu->arch_vpmu_ops = &amd_vpmu_ops;
             break;
         default: