From: "Michael S. Tsirkin" <mst@redhat.com>
To: Borislav Petkov <bp@alien8.de>
Cc: Davidlohr Bueso <dave@stgolabs.net>,
Davidlohr Bueso <dbueso@suse.de>,
Peter Zijlstra <peterz@infradead.org>,
the arch/x86 maintainers <x86@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Andy Lutomirski <luto@amacapital.net>,
Andy Lutomirski <luto@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Thomas Gleixner <tglx@linutronix.de>,
virtualization <virtualization@lists.linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@kernel.org>
Subject: Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb()
Date: Wed, 13 Jan 2016 18:42:48 +0200 [thread overview]
Message-ID: <20160113184003-mutt-send-email-mst@redhat.com> (raw)
In-Reply-To: <20160113163331.GG12897@pd.tnic>
On Wed, Jan 13, 2016 at 05:33:31PM +0100, Borislav Petkov wrote:
> On Wed, Jan 13, 2016 at 06:25:21PM +0200, Michael S. Tsirkin wrote:
> > Which flag do you refer to, exactly?
>
> All the flags in rFLAGS which ADD modifies: OF,SF,ZF,AF,PF,CF
Oh, I think this means we need a "cc" clobber.
This also seems to be a bug on !XMM CPUs.
cmpxchg.h gets it right.
I'll send a patch.
> --
> Regards/Gruss,
> Boris.
>
> ECO tip #101: Trim your mails when you reply.
next prev parent reply other threads:[~2016-01-13 16:42 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1445975631-17047-1-git-send-email-dave@stgolabs.net>
[not found] ` <1445975631-17047-4-git-send-email-dave@stgolabs.net>
[not found] ` <CA+55aFw8d29E26o4eB8VgbZBC5Ot2y9K=T_yE5Dj0dFdyVgOUA@mail.gmail.com>
[not found] ` <20151027223744.GB11242@worktop.amr.corp.intel.com>
[not found] ` <20151102201535.GB1707@linux-uzut.site>
[not found] ` <CA+55aFynbkeuUGs9s-q+fLY6MeRBA6MjEyWWbbe7A5AaqsAknw@mail.gmail.com>
2016-01-12 13:57 ` [PATCH 3/4] x86,asm: Re-work smp_store_mb() Michael S. Tsirkin
[not found] ` <20160112150032-mutt-send-email-mst@redhat.com>
2016-01-12 17:20 ` Linus Torvalds
2016-01-12 17:45 ` Michael S. Tsirkin
2016-01-12 18:04 ` Linus Torvalds
2016-01-12 20:30 ` Andy Lutomirski
2016-01-12 20:54 ` Linus Torvalds
2016-01-12 20:59 ` Andy Lutomirski
2016-01-12 21:37 ` Linus Torvalds
2016-01-12 22:14 ` Michael S. Tsirkin
2016-01-13 16:20 ` Michael S. Tsirkin
2016-01-12 22:21 ` Michael S. Tsirkin
2016-01-12 22:55 ` H. Peter Anvin
2016-01-12 23:24 ` Linus Torvalds
[not found] ` <CA+55aFz44oYK5GD3=-Y2E7bNwmJ0Ko5GaZ+iMQDamLALiw7RqQ@mail.gmail.com>
2016-01-13 16:17 ` Borislav Petkov
2016-01-13 16:25 ` Michael S. Tsirkin
2016-01-13 16:33 ` Borislav Petkov
2016-01-13 16:42 ` Michael S. Tsirkin [this message]
2016-01-13 16:53 ` Borislav Petkov
2016-01-13 17:00 ` Michael S. Tsirkin
2016-01-13 18:38 ` Linus Torvalds
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