Jay Vosburgh a77f9c5dcd Revert "fast_hash: avoid indirect function calls" ... This reverts commit e5a2c89995. Commit e5a2c899 introduced an alternative_call, arch_fast_hash2, that selects between __jhash2 and __intel_crc4_2_hash based on the X86_FEATURE_XMM4_2. Unfortunately, the alternative_call system does not appear to be suitable for use with C functions, as register usage is not handled properly for the called functions. The __jhash2 function in particular clobbers registers that are not preserved when called via alternative_call, resulting in a panic for direct callers of arch_fast_hash2 on older CPUs lacking sse4_2. It is possible that __intel_crc4_2_hash works merely by chance because it uses fewer registers. This commit was suggested as the source of the problem by Jesse Gross <jesse@nicira.com>. Signed-off-by: Jay Vosburgh <jay.vosburgh@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-11-14 16:36:25 -05:00
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asm	Revert "fast_hash: avoid indirect function calls"	2014-11-14 16:36:25 -05:00
uapi/asm	kvm: vmx: handle invvpid vm exit gracefully	2014-10-24 13:21:17 +02:00