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authorWaiman Long <[email protected]>2018-01-22 17:09:34 -0500
committerThomas Gleixner <[email protected]>2018-01-24 12:31:55 +0100
commit1df37383a8aeabb9b418698f0bcdffea01f4b1b2 (patch)
treeea64df099e00740c4e153dccc4ad3de8ad630f85 /tools/testing/selftests/bpf/prog_tests
parent3f7d875566d8e79c5e0b2c9a413e91b2c29e0854 (diff)
x86/retpoline: Remove the esp/rsp thunk
It doesn't make sense to have an indirect call thunk with esp/rsp as retpoline code won't work correctly with the stack pointer register. Removing it will help compiler writers to catch error in case such a thunk call is emitted incorrectly. Fixes: 76b043848fd2 ("x86/retpoline: Add initial retpoline support") Suggested-by: Jeff Law <[email protected]> Signed-off-by: Waiman Long <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Acked-by: David Woodhouse <[email protected]> Cc: Tom Lendacky <[email protected]> Cc: Kees Cook <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Tim Chen <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Jiri Kosina <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Josh Poimboeuf <[email protected]> Cc: Arjan van de Ven <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Paul Turner <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
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