On Tue, Feb 06, 2018 at 11:31:18PM +, David Woodhouse wrote:
>
>
> On Tue, 2018-02-06 at 17:25 -0600, Josh Poimboeuf wrote:
> > On Tue, Feb 06, 2018 at 07:44:52PM +, David Woodhouse wrote:
> > >
> > > On Fri, 2018-01-26 at 21:08 +0100, Borislav Petkov wrote:
> > > >
> > > > Make it all
On Tue, Feb 06, 2018 at 07:44:52PM +, David Woodhouse wrote:
> On Fri, 2018-01-26 at 21:08 +0100, Borislav Petkov wrote:
> > Make it all a function which does the WRMSR instead of having a hairy
> > inline asm.
>
> ...
>
> > + alternative_input("",
> > + "call __ibp_barri
On Tue, 2018-02-06 at 17:25 -0600, Josh Poimboeuf wrote:
> On Tue, Feb 06, 2018 at 07:44:52PM +, David Woodhouse wrote:
> >
> > On Fri, 2018-01-26 at 21:08 +0100, Borislav Petkov wrote:
> > >
> > > Make it all a function which does the WRMSR instead of having a hairy
> > > inline asm.
> > .
On Fri, 2018-01-26 at 21:08 +0100, Borislav Petkov wrote:
> Make it all a function which does the WRMSR instead of having a hairy
> inline asm.
...
> + alternative_input("",
> + "call __ibp_barrier",
> + X86_FEATURE_IBPB,
> + ASM_
On Sat, Jan 27, 2018 at 12:32:41PM +, David Woodhouse wrote:
> Did I already say that needs to live in asm-prototypes.h?
That's a C function.
> And it needs to be exported to modules, I think.
Right.
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim t
On Fri, 2018-01-26 at 21:08 +0100, Borislav Petkov wrote:
>
> --- a/arch/x86/include/asm/processor.h
> +++ b/arch/x86/include/asm/processor.h
> @@ -971,4 +971,8 @@ bool xen_set_default_idle(void);
>
> void stop_this_cpu(void *dummy);
> void df_debug(struct pt_regs *regs, long error_code);
> +
Make it all a function which does the WRMSR instead of having a hairy
inline asm.
Signed-off-by: Borislav Petkov
---
arch/x86/include/asm/cpufeatures.h | 2 +-
arch/x86/include/asm/nospec-branch.h | 13 -
arch/x86/include/asm/processor.h | 4
arch/x86/kernel/cpu/bugs.c
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