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Open Source and information security mailing list archives
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Date: Tue, 25 Jul 2017 17:13:01 +0200 From: Borislav Petkov <bp@...e.de> To: Tom Lendacky <thomas.lendacky@....com> Cc: Brijesh Singh <brijesh.singh@....com>, linux-kernel@...r.kernel.org, x86@...nel.org, linux-efi@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, kvm@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, "H . Peter Anvin" <hpa@...or.com>, Andy Lutomirski <luto@...nel.org>, Tony Luck <tony.luck@...el.com>, Piotr Luc <piotr.luc@...el.com>, Fenghua Yu <fenghua.yu@...el.com>, Lu Baolu <baolu.lu@...ux.intel.com>, Reza Arbab <arbab@...ux.vnet.ibm.com>, David Howells <dhowells@...hat.com>, Matt Fleming <matt@...eblueprint.co.uk>, "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>, Laura Abbott <labbott@...hat.com>, Ard Biesheuvel <ard.biesheuvel@...aro.org>, Andrew Morton <akpm@...ux-foundation.org>, Eric Biederman <ebiederm@...ssion.com>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Paul Mackerras <paulus@...ba.org>, Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>, Jonathan Corbet <corbet@....net>, Dave Airlie <airlied@...hat.com>, Kees Cook <keescook@...omium.org>, Paolo Bonzini <pbonzini@...hat.com>, Radim Krčmář <rkrcmar@...hat.com>, Arnd Bergmann <arnd@...db.de>, Tejun Heo <tj@...nel.org>, Christoph Lameter <cl@...ux.com> Subject: Re: [RFC Part1 PATCH v3 02/17] x86/CPU/AMD: Add the Secure Encrypted Virtualization CPU feature On Tue, Jul 25, 2017 at 09:58:54AM -0500, Tom Lendacky wrote: > True, but it is more about being accurate and making sure the value is > correct where ever it may be used. So early_identify_cpu() initializes phys_bits to 32 on 32-bit. Subtracting it there would actually make actively it wrong, AFAICT. -- Regards/Gruss, Boris. SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) --
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