From: Paolo Bonzini <pbonzini@redhat.com>
To: "Han, Huaitong" <huaitong.han@intel.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 13:08:21 +0100 [thread overview]
Message-ID: <56EFE435.6030000@redhat.com> (raw)
In-Reply-To: <1458561378.3453.2.camel@intel.com>
On 21/03/2016 12:56, Han, Huaitong wrote:
>> > + 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 the name of the variable is kvm_supported_word16_x86_features, it is
not necessarily better.
If we rename the variables with names like
kvm_supported_cpuid_7_ecx_x86_features, then of course we use
CPUID_7_ECX as well.
Paolo
next prev parent reply other threads:[~2016-03-21 12:08 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
2016-03-21 12:08 ` Paolo Bonzini [this message]
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
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