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Re: [Xen-devel] [PATCH] FP fix for x86-64 xenlinux

On 6 Jun 2005, at 08:02, Nakajima, Jun wrote:

With this patch, # of testcase failures with LTP is < 5 (out of 800),
almost same results as the native x86-64 Linux. The other two patches
for LTP are coming soon; with these, all the testcases will pass
(except the ones that fail on the native x86-64 Linux).

Consider defining read/write_cr0 macros same as we do in arch/xen/i386. We set them the same as native (i.e., real accesses to %cr0) and then emulate in Xen. This will ensure that things like raid6 will work, which save/restore %cr0 as part of their fpu save/restore code.

 -- Keir

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