linux-kernel - Re: [PATCH 3/4] KVM: x86 shared msr infrastructure

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4AB1578B.2040404@redhat.com>
Date:	Thu, 17 Sep 2009 00:24:27 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Marcelo Tosatti <mtosatti@...hat.com>
CC:	Ingo Molnar <mingo@...e.hu>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] KVM: x86 shared msr infrastructure

On 09/17/2009 12:21 AM, Marcelo Tosatti wrote:
>> +static struct kvm_shared_msrs_global __read_mostly shared_msrs_global;
>>      
> Does this assume the MSRs in question are consistent across CPUs?
>    

Yes.  And they are.

> I guess that is not true with arch_prctl(ARCH_SET_GS/ARCH_GET_GS) ?
>    

These aren't shared MSRs and are saved and restored independently.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/