* [PATCH] KVM: x86: Expose more Intel AVX512 feature to guest
@ 2016-08-02 8:01 Luwei Kang
2016-08-11 7:32 ` Kang, Luwei
0 siblings, 1 reply; 4+ messages in thread
From: Luwei Kang @ 2016-08-02 8:01 UTC (permalink / raw)
To: kvm; +Cc: pbonzini, rkrcmar, tglx, mingo, hpa, x86, linux-kernel, Luwei Kang
Expose AVX512DQ, AVX512BW, AVX512VL feature to guest.
Its spec can be found at:
https://software.intel.com/sites/default/files/managed/b4/3a/319433-024.pdf
Signed-off-by: Luwei Kang <luwei.kang@intel.com>
---
arch/x86/kvm/cpuid.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 7597b42..a2d007c 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -366,7 +366,8 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
F(FSGSBASE) | F(BMI1) | F(HLE) | F(AVX2) | F(SMEP) |
F(BMI2) | F(ERMS) | f_invpcid | F(RTM) | f_mpx | F(RDSEED) |
F(ADX) | F(SMAP) | F(AVX512F) | F(AVX512PF) | F(AVX512ER) |
- F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB) | F(PCOMMIT);
+ F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB) | F(PCOMMIT) |
+ F(AVX512DQ) | F(AVX512BW) | F(AVX512VL);
/* cpuid 0xD.1.eax */
const u32 kvm_cpuid_D_1_eax_x86_features =
--
2.7.4
^ permalink raw reply related [flat|nested] 4+ messages in thread
* RE: [PATCH] KVM: x86: Expose more Intel AVX512 feature to guest
2016-08-02 8:01 [PATCH] KVM: x86: Expose more Intel AVX512 feature to guest Luwei Kang
@ 2016-08-11 7:32 ` Kang, Luwei
2016-08-11 13:24 ` Paolo Bonzini
0 siblings, 1 reply; 4+ messages in thread
From: Kang, Luwei @ 2016-08-11 7:32 UTC (permalink / raw)
To: kvm; +Cc: pbonzini, rkrcmar, tglx, mingo, hpa, x86, linux-kernel
> Expose AVX512DQ, AVX512BW, AVX512VL feature to guest.
> Its spec can be found at:
> https://software.intel.com/sites/default/files/managed/b4/3a/319433-024.pdf
>
> Signed-off-by: Luwei Kang <luwei.kang@intel.com>
> ---
> arch/x86/kvm/cpuid.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 7597b42..a2d007c 100644
> --- a/arch/x86/kvm/cpuid.c
> +++ b/arch/x86/kvm/cpuid.c
> @@ -366,7 +366,8 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
> F(FSGSBASE) | F(BMI1) | F(HLE) | F(AVX2) | F(SMEP) |
> F(BMI2) | F(ERMS) | f_invpcid | F(RTM) | f_mpx | F(RDSEED) |
> F(ADX) | F(SMAP) | F(AVX512F) | F(AVX512PF) | F(AVX512ER) |
> - F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB) | F(PCOMMIT);
> + F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB) | F(PCOMMIT) |
> + F(AVX512DQ) | F(AVX512BW) | F(AVX512VL);
>
Hi Paolo,
What is your opinion?
> /* cpuid 0xD.1.eax */
> const u32 kvm_cpuid_D_1_eax_x86_features =
> --
> 2.7.4
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] KVM: x86: Expose more Intel AVX512 feature to guest
2016-08-11 7:32 ` Kang, Luwei
@ 2016-08-11 13:24 ` Paolo Bonzini
2016-08-11 14:40 ` Radim Krčmář
0 siblings, 1 reply; 4+ messages in thread
From: Paolo Bonzini @ 2016-08-11 13:24 UTC (permalink / raw)
To: Luwei Kang; +Cc: kvm, rkrcmar, tglx, mingo, hpa, x86, linux-kernel
> > Expose AVX512DQ, AVX512BW, AVX512VL feature to guest.
> > Its spec can be found at:
> > https://software.intel.com/sites/default/files/managed/b4/3a/319433-024.pdf
> >
> > Signed-off-by: Luwei Kang <luwei.kang@intel.com>
> > ---
> > arch/x86/kvm/cpuid.c | 3 ++-
> > 1 file changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index
> > 7597b42..a2d007c 100644
> > --- a/arch/x86/kvm/cpuid.c
> > +++ b/arch/x86/kvm/cpuid.c
> > @@ -366,7 +366,8 @@ static inline int __do_cpuid_ent(struct
> > kvm_cpuid_entry2 *entry, u32 function,
> > F(FSGSBASE) | F(BMI1) | F(HLE) | F(AVX2) | F(SMEP) |
> > F(BMI2) | F(ERMS) | f_invpcid | F(RTM) | f_mpx | F(RDSEED) |
> > F(ADX) | F(SMAP) | F(AVX512F) | F(AVX512PF) | F(AVX512ER) |
> > - F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB) | F(PCOMMIT);
> > + F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB) | F(PCOMMIT) |
> > + F(AVX512DQ) | F(AVX512BW) | F(AVX512VL);
> >
>
> Hi Paolo,
> What is your opinion?
Hi, the patch was sent too late for 4.8 so I just ignored it. :) Radim
is handling the tree now and I guess he'll get to it in the next few
days. It's a trivial patch, so I don't expect any issue.
Paolo
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] KVM: x86: Expose more Intel AVX512 feature to guest
2016-08-11 13:24 ` Paolo Bonzini
@ 2016-08-11 14:40 ` Radim Krčmář
0 siblings, 0 replies; 4+ messages in thread
From: Radim Krčmář @ 2016-08-11 14:40 UTC (permalink / raw)
To: Paolo Bonzini; +Cc: Luwei Kang, kvm, tglx, mingo, hpa, x86, linux-kernel
2016-08-11 09:24-0400, Paolo Bonzini:
>> > Expose AVX512DQ, AVX512BW, AVX512VL feature to guest.
>> > Its spec can be found at:
>> > https://software.intel.com/sites/default/files/managed/b4/3a/319433-024.pdf
>> >
>> > Signed-off-by: Luwei Kang <luwei.kang@intel.com>
>> > ---
>> > arch/x86/kvm/cpuid.c | 3 ++-
>> > 1 file changed, 2 insertions(+), 1 deletion(-)
>> >
>> > diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index
>> > 7597b42..a2d007c 100644
>> > --- a/arch/x86/kvm/cpuid.c
>> > +++ b/arch/x86/kvm/cpuid.c
>> > @@ -366,7 +366,8 @@ static inline int __do_cpuid_ent(struct
>> > kvm_cpuid_entry2 *entry, u32 function,
>> > F(FSGSBASE) | F(BMI1) | F(HLE) | F(AVX2) | F(SMEP) |
>> > F(BMI2) | F(ERMS) | f_invpcid | F(RTM) | f_mpx | F(RDSEED) |
>> > F(ADX) | F(SMAP) | F(AVX512F) | F(AVX512PF) | F(AVX512ER) |
>> > - F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB) | F(PCOMMIT);
>> > + F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB) | F(PCOMMIT) |
>> > + F(AVX512DQ) | F(AVX512BW) | F(AVX512VL);
>> >
>>
>> Hi Paolo,
>> What is your opinion?
>
> Hi, the patch was sent too late for 4.8 so I just ignored it. :) Radim
> is handling the tree now and I guess he'll get to it in the next few
> days. It's a trivial patch, so I don't expect any issue.
F(PCOMMIT) was removed in dfa169bbee00 ("Revert "KVM: x86: add pcommit
support""), so the patch doesn't apply.
I made minor changes (see below) and queued for 4.9, thanks.
- F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB);
+ F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB) | F(AVX512DQ) |
+ F(AVX512BW) | F(AVX512VL);
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2016-08-11 14:40 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2016-08-02 8:01 [PATCH] KVM: x86: Expose more Intel AVX512 feature to guest Luwei Kang
2016-08-11 7:32 ` Kang, Luwei
2016-08-11 13:24 ` Paolo Bonzini
2016-08-11 14:40 ` Radim Krčmář
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