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authorBorislav Petkov2014-11-30 14:26:39 +0100
committerThomas Gleixner2014-12-01 10:55:08 +0100
commit02ecc41abcea4ff9291d548f6f846b29b354ddd2 (patch)
tree8cf227f202435296b55cedb76b84b0e7990bd0c6 /Documentation
parente2e68ae688b0a3766cd75aedf4ed4e39be402009 (diff)
x86, microcode: Limit the microcode reloading to 64-bit for now
First, there was this: https://bugzilla.kernel.org/show_bug.cgi?id=88001 The problem there was that microcode patches are not being reapplied after suspend-to-ram. It was important to reapply them, though, because of for example Haswell's TSX erratum which disabled TSX instructions with a microcode patch. A simple fix was fb86b97300d9 ("x86, microcode: Update BSPs microcode on resume") but, as it is often the case, simple fixes are too simple. This one causes 32-bit resume to fail: https://bugzilla.kernel.org/show_bug.cgi?id=88391 Properly fixing this would require more involved changes for which it is too late now, right before the merge window. Thus, limit this to 64-bit only temporarily. Signed-off-by: Borislav Petkov <bp@suse.de> Link: http://lkml.kernel.org/r/1417353999-32236-1-git-send-email-bp@alien8.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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