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From: Wei Liu <wl@xen.org>
To: Jan Beulich <jbeulich@suse.com>
Cc: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
	"Andrew Cooper" <andrew.cooper3@citrix.com>,
	"Wei Liu" <wl@xen.org>, "Roger Pau Monné" <roger.pau@citrix.com>
Subject: Re: [PATCH v2 2/4] x86: clobber registers in switch_stack_and_jump() when !LIVEPATCH
Date: Tue, 15 Dec 2020 16:28:49 +0000	[thread overview]
Message-ID: <20201215162849.khcagkpxe3ccnohj@liuwe-devbox-debian-v2> (raw)
In-Reply-To: <28db518c-da59-8e56-b8dc-ccc814f91131@suse.com>

On Tue, Dec 15, 2020 at 05:12:12PM +0100, Jan Beulich wrote:
> In order to have the same effect on registers as a call to
> check_for_livepatch_work() may have, clobber all call-clobbered
> registers in debug builds.
> 
> Signed-off-by: Jan Beulich <jbeulich@suse.com>

Reviewed-by: Wei Liu <wl@xen.org>


  reply	other threads:[~2020-12-15 16:29 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-15 16:09 [PATCH v2 0/4] x86: XSA-348 follow-up Jan Beulich
2020-12-15 16:11 ` [PATCH v2 1/4] x86: verify function type (and maybe attribute) in switch_stack_and_jump() Jan Beulich
2020-12-15 16:28   ` Wei Liu
2020-12-21 16:23   ` Julien Grall
2020-12-15 16:12 ` [PATCH v2 2/4] x86: clobber registers in switch_stack_and_jump() when !LIVEPATCH Jan Beulich
2020-12-15 16:28   ` Wei Liu [this message]
2020-12-15 16:12 ` [PATCH v2 3/4] x86/PV: avoid double stack reset during schedule tail handling Jan Beulich
2020-12-15 16:29   ` Wei Liu
2020-12-15 16:13 ` [PATCH v2 4/4] livepatch: adjust a stale comment Jan Beulich
2020-12-15 16:34   ` Konrad Rzeszutek Wilk

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