linux-kernel - Re: [RFC PATCH v2 01/32] x86: Add the Secure Encrypted Virtualization CPU feature

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Message-ID: <20170304101113.k6ontjjbljanm6tv@pd.tnic>
Date:   Sat, 4 Mar 2017 11:11:13 +0100
From:   Borislav Petkov <bp@...e.de>
To:     Brijesh Singh <brijesh.singh@....com>
Cc:     simon.guinot@...uanux.org, linux-efi@...r.kernel.org,
        kvm@...r.kernel.org, rkrcmar@...hat.com, matt@...eblueprint.co.uk,
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Subject: Re: [RFC PATCH v2 01/32] x86: Add the Secure Encrypted
 Virtualization CPU feature

On Fri, Mar 03, 2017 at 03:01:23PM -0600, Brijesh Singh wrote:
> +merely enables SME (sets bit 23 of the MSR_K8_SYSCFG), then Linux can
> activate
> +memory encryption by default (CONFIG_AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT=y)
> or
> +by supplying mem_encrypt=on on the kernel command line.  However, if BIOS
> does
> +not enable SME, then Linux will not be able to activate memory encryption,
> even
> +if configured to do so by default or the mem_encrypt=on command line
> parameter
> +is specified.

This looks like a wraparound...

$ test-apply.sh /tmp/brijesh.singh.delta
checking file Documentation/admin-guide/kernel-parameters.txt
Hunk #1 succeeded at 2144 (offset -9 lines).
checking file Documentation/x86/amd-memory-encryption.txt
patch: **** malformed patch at line 23: DRAM from physical

Yap.

Looks like exchange or your mail client decided to do some patch editing
on its own.

Please send it to yourself first and try applying.

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--