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authorBorislav Petkov <bp@suse.de>2018-01-27 16:24:34 +0000
committerThomas Gleixner <tglx@linutronix.de>2018-01-27 19:10:45 +0100
commit64e16720ea0879f8ab4547e3b9758936d483909b (patch)
treee8f8f39b1bfc79990ae218f451e035724d8e2d87 /lib
parent1dde7415e99933bb7293d6b2843752cbdb43ec11 (diff)
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x86/speculation: Simplify indirect_branch_prediction_barrier()
Make it all a function which does the WRMSR instead of having a hairy inline asm. [dwmw2: export it, fix CONFIG_RETPOLINE issues] Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: ak@linux.intel.com Cc: dave.hansen@intel.com Cc: karahmed@amazon.de Cc: arjan@linux.intel.com Cc: torvalds@linux-foundation.org Cc: peterz@infradead.org Cc: bp@alien8.de Cc: pbonzini@redhat.com Cc: tim.c.chen@linux.intel.com Cc: gregkh@linux-foundation.org Link: https://lkml.kernel.org/r/1517070274-12128-4-git-send-email-dwmw@amazon.co.uk
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