| Date | Mon, 29 Jan 2018 11:58:58 -0600 | From | Josh Poimboeuf <> | Subject | Re: [PATCH 03/24] x86/paravirt: Annotate indirect calls |
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On Tue, Jan 23, 2018 at 04:25:42PM +0100, Peter Zijlstra wrote: > 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. > > Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> > --- > arch/x86/include/asm/paravirt.h | 22 ++++++++++++++++++---- > arch/x86/include/asm/paravirt_types.h | 7 ++++++- > 2 files changed, 24 insertions(+), 5 deletions(-) > > --- a/arch/x86/include/asm/paravirt.h > +++ b/arch/x86/include/asm/paravirt.h > @@ -828,6 +828,12 @@ extern void default_banner(void); > .short clobbers; \ > .popsection > > +#define PARA_RETPOLINE_SAFE \ > + 773:; \ > + .pushsection .discard.retpoline_safe; \ > + _ASM_PTR 773b; \ > + .popsection
Why does paravirt have its own version of this macro?
-- Josh
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