]> git.baikalelectronics.ru Git - kernel.git/commit
x86/paravirt, objtool: Annotate indirect calls
authorPeter Zijlstra <peterz@infradead.org>
Wed, 17 Jan 2018 15:58:11 +0000 (16:58 +0100)
committerIngo Molnar <mingo@kernel.org>
Wed, 21 Feb 2018 08:05:03 +0000 (09:05 +0100)
commiteda697bedb2c37d9d8846ab33cfbac4008c674a0
treeeb7eb50b1aa9570692f4711d74603d91290876c7
parent073cc40074629d50d09d10274c91ec133d69abf6
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>
arch/x86/include/asm/paravirt.h
arch/x86/include/asm/paravirt_types.h