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Groups > linux.kernel > #1308717
| From | Linus Torvalds <torvalds@linux-foundation.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() |
| Date | 2016-01-13 19:40 +0100 |
| Message-ID | <qQyuR-3Ce-15@gated-at.bofh.it> (permalink) |
| References | (6 earlier) <qQgxY-7W2-13@gated-at.bofh.it> <qQwjn-2ek-7@gated-at.bofh.it> <qQwt4-2jv-11@gated-at.bofh.it> <qQwCK-2o0-5@gated-at.bofh.it> <qQwMs-2sp-57@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, Jan 13, 2016 at 8:42 AM, Michael S. Tsirkin <mst@redhat.com> wrote:
>
> Oh, I think this means we need a "cc" clobber.
It's probably a good idea to add one.
Historically, gcc doesn't need one on x86, and always considers flags
clobbered. We are probably missing the cc clobber in a *lot* of places
for this reason.
But even if not necessary, it's probably a good thing to add for
documentation, and in case gcc semantcs ever change.
Linus
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Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() "Michael S. Tsirkin" <mst@redhat.com> - 2016-01-12 15:00 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() Linus Torvalds <torvalds@linux-foundation.org> - 2016-01-12 18:30 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() "Michael S. Tsirkin" <mst@redhat.com> - 2016-01-12 18:50 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() Linus Torvalds <torvalds@linux-foundation.org> - 2016-01-12 19:10 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() Andy Lutomirski <luto@kernel.org> - 2016-01-12 21:40 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() Linus Torvalds <torvalds@linux-foundation.org> - 2016-01-12 22:00 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() Andy Lutomirski <luto@amacapital.net> - 2016-01-12 22:10 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() Linus Torvalds <torvalds@linux-foundation.org> - 2016-01-12 22:40 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() "Michael S. Tsirkin" <mst@redhat.com> - 2016-01-12 23:20 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() "Michael S. Tsirkin" <mst@redhat.com> - 2016-01-13 17:30 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() "Michael S. Tsirkin" <mst@redhat.com> - 2016-01-12 23:30 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() "H. Peter Anvin" <hpa@zytor.com> - 2016-01-13 00:00 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() Linus Torvalds <torvalds@linux-foundation.org> - 2016-01-13 00:30 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() Borislav Petkov <bp@alien8.de> - 2016-01-13 17:20 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() "Michael S. Tsirkin" <mst@redhat.com> - 2016-01-13 17:30 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() Borislav Petkov <bp@alien8.de> - 2016-01-13 17:40 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() "Michael S. Tsirkin" <mst@redhat.com> - 2016-01-13 17:50 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() Borislav Petkov <bp@alien8.de> - 2016-01-13 18:00 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() "Michael S. Tsirkin" <mst@redhat.com> - 2016-01-13 18:10 +0100
Re: [PATCH 3/4] x86,asm: Re-work smp_store_mb() Linus Torvalds <torvalds@linux-foundation.org> - 2016-01-13 19:40 +0100
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