Re: [RFC Part2 PATCH v3 15/26] KVM: SVM: Add support for SEV LAUNCH_START command

From	Borislav Petkov <bp@suse.de>
Newsgroups	linux.kernel
Subject	Re: [RFC Part2 PATCH v3 15/26] KVM: SVM: Add support for SEV LAUNCH_START command
Date	2017-09-13 23:10 +0200
Message-ID	<upn4Z-47u-7@gated-at.bofh.it> (permalink)
References	(1 earlier) <upjE6-1RR-19@gated-at.bofh.it> <upjE5-1RR-17@gated-at.bofh.it> <upkJR-2xf-35@gated-at.bofh.it> <upkJR-2xf-33@gated-at.bofh.it> <upn4Z-47u-9@gated-at.bofh.it>
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On Wed, Sep 13, 2017 at 01:58:31PM -0500, Brijesh Singh wrote:
> Actually reversed fields are not exposed in userspace structure.

Ok.

> The current approach is -- while handling the command we copy the value
> from userspace structure into FW compatible structure and also populate
> missing fields which are not known to userspace (e.g firmware handle,
> VM ASID, use system physical addresses etc).

Yap, that makes sense. All I'm saying is, check anything that userspace
can influence and make sure it is sensible.

Thx.

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
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Re: [RFC Part2 PATCH v3 15/26] KVM: SVM: Add support for SEV  LAUNCH_START command Borislav Petkov <bp@alien8.de> - 2017-09-13 19:30 +0200
  Re: [RFC Part2 PATCH v3 15/26] KVM: SVM: Add support for SEV  LAUNCH_START command Borislav Petkov <bp@suse.de> - 2017-09-13 20:40 +0200
    Re: [RFC Part2 PATCH v3 15/26] KVM: SVM: Add support for SEV  LAUNCH_START command Borislav Petkov <bp@suse.de> - 2017-09-13 23:10 +0200

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