diff options
| author | Eduardo Habkost <ehabkost@redhat.com> | 2015-01-22 17:22:54 -0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-01-26 12:27:05 +0100 |
| commit | 13704e4c455770d500d6b87b117e32f0d01252c9 (patch) | |
| tree | 1151345abb4c802bce38b881e0992c5663b65417 /hw | |
| parent | 80fd48df4a53d01cc5d8a41e565f81af5978121f (diff) | |
| download | qemu-13704e4c455770d500d6b87b117e32f0d01252c9.tar.gz | |
target-i386: Disable HLE and RTM on Haswell & Broadwell
All Haswell CPUs and some Broadwell CPUs were updated by Intel to have
the HLE and RTM features disabled. This will prevent
"-cpu Haswell,enforce" and "-cpu Broadwell,enforce" from running out of
the box on those CPUs.
Disable those features by default on Broadwell and Haswell CPU models,
starting on pc-*-2.3. Users who want to use those features can enable
them explicitly on the command-line.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/i386/pc_piix.c | 4 | ||||
| -rw-r--r-- | hw/i386/pc_q35.c | 4 |
2 files changed, 8 insertions, 0 deletions
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index 97a754e11e..38b42b05f8 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -328,6 +328,10 @@ static void pc_compat_2_2(MachineState *machine) x86_cpu_compat_set_features("Haswell", FEAT_1_ECX, 0, CPUID_EXT_RDRAND); x86_cpu_compat_set_features("Broadwell", FEAT_1_ECX, 0, CPUID_EXT_F16C); x86_cpu_compat_set_features("Broadwell", FEAT_1_ECX, 0, CPUID_EXT_RDRAND); + x86_cpu_compat_set_features("Haswell", FEAT_7_0_EBX, + CPUID_7_0_EBX_HLE | CPUID_7_0_EBX_RTM, 0); + x86_cpu_compat_set_features("Broadwell", FEAT_7_0_EBX, + CPUID_7_0_EBX_HLE | CPUID_7_0_EBX_RTM, 0); } static void pc_compat_2_1(MachineState *machine) diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index a432944f02..63027ee76b 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -307,6 +307,10 @@ static void pc_compat_2_2(MachineState *machine) x86_cpu_compat_set_features("Haswell", FEAT_1_ECX, 0, CPUID_EXT_RDRAND); x86_cpu_compat_set_features("Broadwell", FEAT_1_ECX, 0, CPUID_EXT_F16C); x86_cpu_compat_set_features("Broadwell", FEAT_1_ECX, 0, CPUID_EXT_RDRAND); + x86_cpu_compat_set_features("Haswell", FEAT_7_0_EBX, + CPUID_7_0_EBX_HLE | CPUID_7_0_EBX_RTM, 0); + x86_cpu_compat_set_features("Broadwell", FEAT_7_0_EBX, + CPUID_7_0_EBX_HLE | CPUID_7_0_EBX_RTM, 0); } static void pc_compat_2_1(MachineState *machine) |