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d="scan'208";a="61290521" Date: Wed, 5 Jan 2022 14:49:56 +0000 From: Anthony PERARD To: Jan Beulich CC: "xen-devel@lists.xenproject.org" , "Ian Jackson" , Andrew Cooper , "Wei Liu" , Roger Pau =?iso-8859-1?Q?Monn=E9?= Subject: Re: [PATCH] tools/xen-detect: avoid possible pitfall with cpuid() Message-ID: References: <94338540-4bcc-7ad7-9de1-944c0dc96709@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <94338540-4bcc-7ad7-9de1-944c0dc96709@suse.com> On Fri, Dec 03, 2021 at 01:09:04PM +0100, Jan Beulich wrote: > The 64-bit form forces %ecx to 0 while the 32-bit one so far didn't - it > only ended up that way when "pv_context" is zero. While presently no > leaf queried by callers has separate subleaves, let's avoid chancing it. > > While there > - replace references to operands by number, > - relax constraints where possible, > - limit PUSH/POP to just the registers not also used as input, > all where applicable also for the 64-bit variant. > > Signed-off-by: Jan Beulich Reviewed-by: Anthony PERARD Thanks, -- Anthony PERARD