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From: Borislav Petkov <bp@alien8.de>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Satoru Takeuchi <satoru.takeuchi@gmail.com>,
	x86@kernel.org, linux-kernel@vger.kernel.org,
	kvm ML <kvm@vger.kernel.org>
Subject: Re: [BUG] x86: failed to boot a kernel on a Ryzen machine
Date: Wed, 26 Apr 2017 10:14:19 +0200	[thread overview]
Message-ID: <20170426081419.jnzekvsqgphkmucr@pd.tnic> (raw)
In-Reply-To: <a24c23bc-cdd2-8ad1-972d-b89ea585f4f1@redhat.com>

On Wed, Apr 26, 2017 at 09:48:22AM +0200, Paolo Bonzini wrote:
> The OSXSAVE CPUID bit is not set by QEMU, it is set by the OS itself
> (indirectly) when it sets CR4.OSXSAVE.  QEMU says it's not available
> (probably) because the Opteron_G3 CPU model does not have the 0xD CPUID
> leaf.

Nope:

0x00000000 0x00: eax=0x00000005 ebx=0x68747541 ecx=0x444d4163 edx=0x69746e65
		     ^^^^^^^^^^

highest is 0x5. I'll let Satoru comment on the rest.

Thanks Paolo!

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

  reply	other threads:[~2017-04-26  8:15 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-24  6:58 [BUG] x86: failed to boot a kernel on a Ryzen machine Satoru Takeuchi
2017-04-24 11:07 ` Borislav Petkov
2017-04-24 12:39   ` Satoru Takeuchi
2017-04-24 12:48     ` Borislav Petkov
2017-04-24 13:09       ` Satoru Takeuchi
2017-04-25  9:36         ` Borislav Petkov
2017-04-25  9:36           ` Borislav Petkov
2017-04-26  7:48           ` Paolo Bonzini
2017-04-26  8:14             ` Borislav Petkov [this message]
2017-04-26 11:47             ` Satoru Takeuchi
2017-04-26 16:58               ` Paolo Bonzini
2017-04-27  0:42                 ` Satoru Takeuchi
2017-04-27  0:42                   ` Satoru Takeuchi
2017-04-28 13:34                   ` Paolo Bonzini
2017-04-28 13:34                     ` Paolo Bonzini
2017-04-29 21:08                     ` Satoru Takeuchi
2017-04-29 21:08                       ` Satoru Takeuchi
2017-04-25 14:58         ` Masami Hiramatsu
2017-04-26 11:56           ` Satoru Takeuchi
2017-04-26 12:51             ` Borislav Petkov
2017-04-24 11:27 ` Satoru Takeuchi
2017-04-25  7:45   ` Jon Masters

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