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[RESEND][xen-devel][PATCH]: Fixing the xchg emulation bug

The following patch fixes a bug in the emulation of the xchg
instruction. This bug has prevented us from booting fully virtualized
SMP guests that write to the APIC using the xchg instruction (when
CONFIG_X86_GOOD_APIC is not set). On 32 bit platforms, sles 10 kernels
are built without CONFIG_x86_GOOD_APIC not set and hence we have had
problems  booting fully virtualized SMP sles 10 guests. 

Please apply to testing as well as unstable tree.

Signed- off- by K. Y. Srinivasan <ksrinivasan@xxxxxxxxxx>

Attachment: hvm-xchg.diff
Description: Binary data

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