Messages in this thread | | | Subject | Re: [RFC Part1 PATCH v3 02/17] x86/CPU/AMD: Add the Secure Encrypted Virtualization CPU feature | From | Tom Lendacky <> | Date | Wed, 9 Aug 2017 13:17:54 -0500 |
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On 7/25/2017 10:33 AM, Borislav Petkov wrote: > On Tue, Jul 25, 2017 at 10:29:40AM -0500, Tom Lendacky wrote: >> But early_identify_cpu() calls get_cpu_cap() which will check for cpuid >> leaf 0x80000008 support and set x86_phys_bits. > > Right, but it can't be less than 32, can it? And if it is more than 32 > bits, then it probably doesn't really matter on 32-bit. Unless it is > less than 36 bits and you do PAE... > >> I'll try to build and run a 32-bit kernel and see how this all flows. > > Yeah, that would be good.
Ok, finally got around to running a 32-bit kernel and it reports x86_phys_bits as 48.
Thanks, Tom
> > Thanks. >
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