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Groups > linux.kernel > #1272615
| From | Boris Ostrovsky <boris.ostrovsky@oracle.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 1/3] x86/xen: Avoid fast syscall path for Xen PV guests |
| Date | 2015-11-18 23:10 +0100 |
| Message-ID | <qwj5o-Ff-9@gated-at.bofh.it> (permalink) |
| References | <qwhdg-7Lc-9@gated-at.bofh.it> <qwhdg-7Lc-29@gated-at.bofh.it> <qwhwC-7V2-33@gated-at.bofh.it> <qwhZD-8au-1@gated-at.bofh.it> <qwhZE-8au-21@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 11/18/2015 03:58 PM, Andy Lutomirski wrote: > On Wed, Nov 18, 2015 at 12:50 PM, Brian Gerst <brgerst@gmail.com> wrote: >> >> Can you just add !xen_pv_domain() to the opportunistic SYSRET check >> instead? Bury the alternatives in that macro, ie. >> static_cpu_has(X86_FEATURE_XENPV). That would likely benefit other >> code as well. > We could, but that won't help the 64-bit case where we want to keep > the full asm path. I don't think I understand what you mean here. Which full asm path? -boris -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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[PATCH 0/3] Fix and cleanup for 32-bit PV sysexit Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2015-11-18 21:10 +0100
[PATCH 1/3] x86/xen: Avoid fast syscall path for Xen PV guests Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2015-11-18 21:10 +0100
Re: [PATCH 1/3] x86/xen: Avoid fast syscall path for Xen PV guests Andy Lutomirski <luto@amacapital.net> - 2015-11-18 21:30 +0100
Re: [PATCH 1/3] x86/xen: Avoid fast syscall path for Xen PV guests Borislav Petkov <bp@suse.de> - 2015-11-18 21:50 +0100
Re: [PATCH 1/3] x86/xen: Avoid fast syscall path for Xen PV guests Brian Gerst <brgerst@gmail.com> - 2015-11-18 22:00 +0100
Re: [PATCH 1/3] x86/xen: Avoid fast syscall path for Xen PV guests Andy Lutomirski <luto@amacapital.net> - 2015-11-18 22:00 +0100
Re: [PATCH 1/3] x86/xen: Avoid fast syscall path for Xen PV guests Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2015-11-18 23:10 +0100
Re: [PATCH 1/3] x86/xen: Avoid fast syscall path for Xen PV guests Borislav Petkov <bp@suse.de> - 2015-11-19 13:10 +0100
Re: [PATCH 0/3] Fix and cleanup for 32-bit PV sysexit Borislav Petkov <bp@suse.de> - 2015-11-19 13:20 +0100
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