Messages in this thread | | | Date | Fri, 12 Mar 2021 18:16:13 +0100 | From | Peter Zijlstra <> | Subject | [PATCH 0/9] x86,objtool: Optimize !RETPOLINE |
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Hi,
Now that Juergen's paravirt rework, which included the negative alternative stuff, landed in tip, here's a respin of my retpoline patches.
The main feature is replacing the compiler generated (tail) calls to __x86_indirect_thunk_\reg with an ALTERNATIVE that replaces them with regular indirect call instructions, eliding the double jump.
Patches rely on tip/objtool/core and tip/x86/alternatives
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