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authorPeter Zijlstra <peterz@infradead.org>2018-01-17 16:58:11 +0100
committerIngo Molnar <mingo@kernel.org>2018-02-21 09:05:03 +0100
commit3010a0663fd949d122eca0561b06b0a9453f7866 (patch)
treeeb7eb50b1aa9570692f4711d74603d91290876c7 /scripts
parent9e0e3c5130e949c389caabc8033e9799b129e429 (diff)
downloadlwn-3010a0663fd949d122eca0561b06b0a9453f7866.tar.gz
lwn-3010a0663fd949d122eca0561b06b0a9453f7866.zip
x86/paravirt, objtool: Annotate indirect calls
Paravirt emits indirect calls which get flagged by objtool retpoline checks, annotate it away because all these indirect calls will be patched out before we start userspace. This patching happens through alternative_instructions() -> apply_paravirt() -> pv_init_ops.patch() which will eventually end up in paravirt_patch_default(). This function _will_ write direct alternatives. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: David Woodhouse <dwmw@amazon.co.uk> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org>
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