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From: Babu Moger <babu.moger@amd.com>
To: mst@redhat.com, marcel@redhat.com, pbonzini@redhat.com,
	rth@twiddle.net, ehabkost@redhat.com, mtosatti@redhat.com
Cc: babu.moger@amd.com, kash@tripleback.net, qemu-devel@nongnu.org,
	kvm@vger.kernel.org
Subject: [PATCH v5 8/9] i386: Enable TOPOEXT feature on AMD EPYC CPU
Date: Tue, 27 Mar 2018 17:31:10 -0400	[thread overview]
Message-ID: <1522186271-27743-9-git-send-email-babu.moger@amd.com> (raw)
In-Reply-To: <1522186271-27743-1-git-send-email-babu.moger@amd.com>

Enable TOPOEXT feature on EPYC CPU. This is required to support
hyperthreading on VM guests. Also extend xlevel to 0x8000001E.

Signed-off-by: Babu Moger <babu.moger@amd.com>
---
 target/i386/cpu.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 6f3ad44..f8e7325 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -2330,7 +2330,8 @@ static X86CPUDefinition builtin_x86_defs[] = {
         .features[FEAT_8000_0001_ECX] =
             CPUID_EXT3_OSVW | CPUID_EXT3_3DNOWPREFETCH |
             CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A | CPUID_EXT3_ABM |
-            CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM,
+            CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM |
+            CPUID_EXT3_TOPOEXT,
         .features[FEAT_7_0_EBX] =
             CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_AVX2 |
             CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_RDSEED |
@@ -2422,7 +2423,8 @@ static X86CPUDefinition builtin_x86_defs[] = {
         .features[FEAT_8000_0001_ECX] =
             CPUID_EXT3_OSVW | CPUID_EXT3_3DNOWPREFETCH |
             CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A | CPUID_EXT3_ABM |
-            CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM,
+            CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM |
+            CPUID_EXT3_TOPOEXT,
         .features[FEAT_8000_0008_EBX] =
             CPUID_8000_0008_EBX_IBPB,
         .features[FEAT_7_0_EBX] =
@@ -4575,6 +4577,11 @@ static void x86_cpu_expand_features(X86CPU *cpu, Error **errp)
             x86_cpu_adjust_level(cpu, &env->cpuid_min_xlevel, 0x8000000A);
         }
 
+        /* TOPOEXT feature requires 0x8000001E */
+        if (env->features[FEAT_8000_0001_ECX] & CPUID_EXT3_TOPOEXT) {
+            x86_cpu_adjust_level(cpu, &env->cpuid_min_xlevel, 0x8000001E);
+        }
+
         /* SEV requires CPUID[0x8000001F] */
         if (sev_enabled()) {
             x86_cpu_adjust_level(cpu, &env->cpuid_min_xlevel, 0x8000001F);
-- 
1.8.3.1

WARNING: multiple messages have this Message-ID (diff)
From: Babu Moger <babu.moger@amd.com>
To: mst@redhat.com, marcel@redhat.com, pbonzini@redhat.com,
	rth@twiddle.net, ehabkost@redhat.com, mtosatti@redhat.com
Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, kash@tripleback.net,
	babu.moger@amd.com
Subject: [Qemu-devel] [PATCH v5 8/9] i386: Enable TOPOEXT feature on AMD EPYC CPU
Date: Tue, 27 Mar 2018 17:31:10 -0400	[thread overview]
Message-ID: <1522186271-27743-9-git-send-email-babu.moger@amd.com> (raw)
In-Reply-To: <1522186271-27743-1-git-send-email-babu.moger@amd.com>

Enable TOPOEXT feature on EPYC CPU. This is required to support
hyperthreading on VM guests. Also extend xlevel to 0x8000001E.

Signed-off-by: Babu Moger <babu.moger@amd.com>
---
 target/i386/cpu.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 6f3ad44..f8e7325 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -2330,7 +2330,8 @@ static X86CPUDefinition builtin_x86_defs[] = {
         .features[FEAT_8000_0001_ECX] =
             CPUID_EXT3_OSVW | CPUID_EXT3_3DNOWPREFETCH |
             CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A | CPUID_EXT3_ABM |
-            CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM,
+            CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM |
+            CPUID_EXT3_TOPOEXT,
         .features[FEAT_7_0_EBX] =
             CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_AVX2 |
             CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_RDSEED |
@@ -2422,7 +2423,8 @@ static X86CPUDefinition builtin_x86_defs[] = {
         .features[FEAT_8000_0001_ECX] =
             CPUID_EXT3_OSVW | CPUID_EXT3_3DNOWPREFETCH |
             CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A | CPUID_EXT3_ABM |
-            CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM,
+            CPUID_EXT3_CR8LEG | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM |
+            CPUID_EXT3_TOPOEXT,
         .features[FEAT_8000_0008_EBX] =
             CPUID_8000_0008_EBX_IBPB,
         .features[FEAT_7_0_EBX] =
@@ -4575,6 +4577,11 @@ static void x86_cpu_expand_features(X86CPU *cpu, Error **errp)
             x86_cpu_adjust_level(cpu, &env->cpuid_min_xlevel, 0x8000000A);
         }
 
+        /* TOPOEXT feature requires 0x8000001E */
+        if (env->features[FEAT_8000_0001_ECX] & CPUID_EXT3_TOPOEXT) {
+            x86_cpu_adjust_level(cpu, &env->cpuid_min_xlevel, 0x8000001E);
+        }
+
         /* SEV requires CPUID[0x8000001F] */
         if (sev_enabled()) {
             x86_cpu_adjust_level(cpu, &env->cpuid_min_xlevel, 0x8000001F);
-- 
1.8.3.1

  parent reply	other threads:[~2018-03-27 21:31 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-27 21:31 [PATCH v5 0/9] i386: Enable TOPOEXT to support hyperthreading on AMD CPU Babu Moger
2018-03-27 21:31 ` [Qemu-devel] " Babu Moger
2018-03-27 21:31 ` [PATCH v5 1/9] i386: Helpers to encode cache information consistently Babu Moger
2018-03-27 21:31   ` [Qemu-devel] " Babu Moger
2018-03-27 21:31 ` [PATCH v5 2/9] i386: Add cache information in X86CPUDefinition Babu Moger
2018-03-27 21:31   ` [Qemu-devel] " Babu Moger
2018-03-27 21:31 ` [PATCH v5 3/9] i386: Initialize cache information for EPYC family processors Babu Moger
2018-03-27 21:31   ` [Qemu-devel] " Babu Moger
2018-03-27 21:31 ` [PATCH v5 4/9] i386: Add new property to control cache info Babu Moger
2018-03-27 21:31   ` [Qemu-devel] " Babu Moger
2018-04-09 16:59   ` Alexandr Iarygin
2018-04-09 16:59     ` [Qemu-devel] " Alexandr Iarygin
2018-04-09 19:51     ` Moger, Babu
2018-04-09 19:51       ` [Qemu-devel] " Moger, Babu
2018-04-09 20:07       ` Eduardo Habkost
2018-04-09 20:07         ` [Qemu-devel] " Eduardo Habkost
2018-03-27 21:31 ` [PATCH v5 5/9] i386: Use the statically loaded cache definitions Babu Moger
2018-03-27 21:31   ` [Qemu-devel] " Babu Moger
2018-03-27 21:31 ` [PATCH v5 6/9] i386: Populate AMD Processor Cache Information for cpuid 0x8000001D Babu Moger
2018-03-27 21:31   ` [Qemu-devel] " Babu Moger
2018-03-27 21:31 ` [PATCH v5 7/9] i386: Add support for CPUID_8000_001E for AMD Babu Moger
2018-03-27 21:31   ` [Qemu-devel] " Babu Moger
2018-03-27 21:31 ` Babu Moger [this message]
2018-03-27 21:31   ` [Qemu-devel] [PATCH v5 8/9] i386: Enable TOPOEXT feature on AMD EPYC CPU Babu Moger
2018-03-27 21:31 ` [PATCH v5 9/9] i386: Remove generic SMT thread check Babu Moger
2018-03-27 21:31   ` [Qemu-devel] " Babu Moger
2018-04-09  2:58 ` [PATCH v5 0/9] i386: Enable TOPOEXT to support hyperthreading on AMD CPU Moger, Babu
2018-04-09  2:58   ` [Qemu-devel] " Moger, Babu

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