linux-kernel - Re: [PATCH v1] xen: get rid of paravirt op adjust_exception

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Message-ID: <5978921C.6020605@oracle.com>
Date:   Wed, 26 Jul 2017 08:59:08 -0400
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Juergen Gross <jgross@...e.com>, linux-kernel@...r.kernel.org,
        xen-devel@...ts.xenproject.org, x86@...nel.org
Cc:     hpa@...or.com, tglx@...utronix.de, mingo@...hat.com,
        luto@...capital.net
Subject: Re: [PATCH v1] xen: get rid of paravirt op adjust_exception_frame



On 7/24/2017 10:28 AM, Juergen Gross wrote:
> When running as Xen pv-guest the exception frame on the stack contains
> %r11 and %rcx additional to the other data pushed by the processor.
>
> Instead of having a paravirt op being called for each exception type
> prepend the Xen specific code to each exception entry. When running as
> Xen pv-guest just use the exception entry with prepended instructions,
> otherwise use the entry without the Xen specific code.
>
> Signed-off-by: Juergen Gross <jgross@...e.com>

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>

(I'd s/xen/x86/ in subject to get x86 maintainers' attention ;-))