On 01/25/2013 02:11 PM, H. Peter Anvin wrote: > On 01/25/2013 02:43 AM, tip-bot for Jan Beulich wrote: >> Commit-ID: 05fbf4d6fc6a3c0c3e63b77979c9311596716d10 >> Gitweb: http://git.kernel.org/tip/05fbf4d6fc6a3c0c3e63b77979c9311596716d10 >> Author: Jan Beulich <JBeulich@xxxxxxxx> >> AuthorDate: Fri, 2 Nov 2012 14:21:23 +0000 >> Committer: Ingo Molnar <mingo@xxxxxxxxxx> >> CommitDate: Fri, 25 Jan 2013 09:23:51 +0100 >> >> x86/xor: Make virtualization friendly >> >> In virtualized environments, the CR0.TS management needed here >> can be a lot slower than anticipated by the original authors of >> this code, which particularly means that in such cases forcing >> the use of SSE- (or MMX-) based implementations is not desirable >> - actual measurements should always be done in that case. >> >> For consistency, pull into the shared (32- and 64-bit) header >> not only the inclusion of the generic code, but also that of the >> AVX variants. >> > > This patch is wrong and should be dropped. I verified it with the KVM > people that they do NOT want this change. It is a Xen-specific problem. > FWIW: I have dropped this patch from tip:x86/asm. -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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