[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 1/3] x86/xen: Avoid fast syscall path for Xen PV guests
On Wed, Nov 18, 2015 at 12:21:56PM -0800, Andy Lutomirski wrote: > Could we make this a little less subtle: > > ALTERNATIVE "testl %eax, %eax; lz .Lsyscall_32_done", "jmp > .Lsyscasll_32_done", X86_FEATURE_XENPV > > Borislav, what do you think? I don't mind either. I would've said your version doesn't touch %eax so the result in there might be useful for callers but all paths do overwrite it, AFAICT. -- Regards/Gruss, Boris. SUSE Linux GmbH, GF: Felix ImendÃrffer, Jane Smithard, Graham Norton, HRB 21284 (AG NÃrnberg) -- _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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