linux-kernel - Re: [PATCH 08/13] KVM: x86: stubs for SMM support

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]

Date:	Tue, 05 May 2015 11:37:54 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Radim Krčmář <rkrcmar@...hat.com>
CC:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org, bsd@...hat.com,
	guangrong.xiao@...ux.intel.com,
	Yang Zhang <yang.z.zhang@...el.com>, wanpeng.li@...ux.intel.com
Subject: Re: [PATCH 08/13] KVM: x86: stubs for SMM support



On 04/05/2015 19:51, Radim Krčmář wrote:
> (I'm not sure if this is supported if IA32_VMX_BASIC[49] = 0.
>  34.15.6.4 Saving Guest State
>    The SMM-transfer monitor (STM) can also discover the current value of
>    the SMBASE register by using the RDMSR
> 
>  but it's not possible to get into STM without having a support for it
>  noted in IA32_VMX_BASIC[49] and more magic we also don't emulate to
>  actually enable it.)

I can certainly make the SMBASE MSR host-accessible only.

Paolo
--
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/