From: "Han, Huaitong" <huaitong.han@intel.com>
To: "pbonzini@redhat.com" <pbonzini@redhat.com>
Cc: "gleb@kernel.org" <gleb@kernel.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"guangrong.xiao@linux.intel.com" <guangrong.xiao@linux.intel.com>
Subject: Re: [PATCH V5 7/9] KVM, pkeys: expose CPUID/CR4 to guest
Date: Mon, 21 Mar 2016 11:56:19 +0000 [thread overview]
Message-ID: <1458561378.3453.2.camel@intel.com> (raw)
In-Reply-To: <56EFDCC0.1080307@redhat.com>
On Mon, 2016-03-21 at 12:36 +0100, Paolo Bonzini wrote:
>
> This is now word 16, so:
>
> diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
> index b40445612135..1ecaed58b8c0 100644
> --- a/arch/x86/kvm/cpuid.c
> +++ b/arch/x86/kvm/cpuid.c
> @@ -372,7 +372,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
> F(XSAVEOPT) | F(XSAVEC) | F(XGETBV1) | f_xsaves;
>
> /* cpuid 7.0.ecx*/
> - const u32 kvm_supported_word11_x86_features = F(PKU) | 0 /*OSPKE*/;
> + const u32 kvm_supported_word16_x86_features = F(PKU) | 0 /*OSPKE*/;
>
> /* all calls to cpuid_count() should be made on the same cpu */
> get_cpu();
> @@ -451,8 +451,8 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
> cpuid_mask(&entry->ebx, 9);
> // TSC_ADJUST is emulated
> entry->ebx |= F(TSC_ADJUST);
> - entry->ecx &= kvm_supported_word11_x86_features;
> - cpuid_mask(&entry->ecx, CPUID_7_ECX);
> + entry->ecx &= kvm_supported_word16_x86_features;
> + cpuid_mask(&entry->ecx, 16);
cpuid_mask(&entry->ecx, CPUID_7_ECX), CPUID_7_ECX is better than 16?
> if (!tdp_enabled)
> /*
> * PKU is not yet implemented for shadow
>
> Paolo
>
next prev parent reply other threads:[~2016-03-21 11:56 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-21 10:05 [PATCH V5 0/9] KVM, pkeys: add memory protection-key support Huaitong Han
2016-03-21 10:05 ` [PATCH V5 1/9] KVM, pkeys: disable pkeys for guests in non-paging mode Huaitong Han
2016-03-21 10:05 ` [PATCH V5 2/9] KVM, pkeys: add pkeys support for xsave state Huaitong Han
2016-03-21 10:05 ` [PATCH V5 3/9] x86: pkey: introduce write_pkru() for KVM Huaitong Han
2016-03-21 10:05 ` [PATCH V5 4/9] KVM, pkeys: save/restore PKRU when guest/host switches Huaitong Han
2016-03-21 10:28 ` Paolo Bonzini
2016-03-21 10:37 ` Han, Huaitong
2016-03-21 10:05 ` [PATCH V5 5/9] KVM, pkeys: introduce pkru_mask to cache conditions Huaitong Han
2016-03-21 17:43 ` Paolo Bonzini
2016-03-21 10:05 ` [PATCH V5 6/9] KVM, pkeys: add pkeys support for permission_fault logic Huaitong Han
2016-03-21 10:55 ` Paolo Bonzini
2016-03-21 12:41 ` Han, Huaitong
2016-03-21 10:05 ` [PATCH V5 7/9] KVM, pkeys: expose CPUID/CR4 to guest Huaitong Han
2016-03-21 11:36 ` Paolo Bonzini
2016-03-21 11:56 ` Han, Huaitong [this message]
2016-03-21 12:08 ` Paolo Bonzini
2016-03-21 10:05 ` [PATCH V5 8/9] KVM, pkeys: disable PKU feature without ept Huaitong Han
2016-03-21 11:01 ` Paolo Bonzini
2016-03-21 10:06 ` [PATCH V5 9/9] Revert "KVM: MMU: precompute page fault error code" Huaitong Han
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1458561378.3453.2.camel@intel.com \
--to=huaitong.han@intel.com \
--cc=gleb@kernel.org \
--cc=guangrong.xiao@linux.intel.com \
--cc=kvm@vger.kernel.org \
--cc=pbonzini@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox