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Date: Thu, 30 Apr 2020 15:29:53 +1000 From: Herbert Xu <herbert@...dor.apana.org.au> To: Tom Lendacky <thomas.lendacky@....com> Cc: linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org, David Miller <davem@...emloft.net>, Joerg Roedel <joro@...tes.org>, Borislav Petkov <bp@...en8.de>, Brijesh Singh <brijesh.singh@....com> Subject: Re: [PATCH v2] crypto: ccp: Add support for SEV-ES to the PSP driver On Tue, Apr 21, 2020 at 12:44:49PM -0500, Tom Lendacky wrote: > To provide support for SEV-ES, the hypervisor must provide an area of > memory to the PSP. Once this Trusted Memory Region (TMR) is provided to > the PSP, the contents of this area of memory are no longer available to > the x86. > > Update the PSP driver to allocate a 1MB region for the TMR that is 1MB > aligned and then provide it to the PSP through the SEV INIT command. > > Signed-off-by: Tom Lendacky <thomas.lendacky@....com> > > --- > > Changes since v1: > - No need to over-allocate the memory area to obtain the required > alignment when using the page allocator. > --- > drivers/crypto/ccp/sev-dev.c | 43 ++++++++++++++++++++++++++++++++++++ > include/linux/psp-sev.h | 2 ++ > include/uapi/linux/psp-sev.h | 2 ++ > 3 files changed, 47 insertions(+) Patch applied. Thanks. -- Email: Herbert Xu <herbert@...dor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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