Re: [PATCH v6 04/21] arm64: smccc: Include alternative-macros.h

[Dmitry Baryshkov]

On Wed, 26 Oct 2022 at 23:24, Elliot Berman <quic_eberman@xxxxxxxxxxx> wrote:
>
>
> On 10/26/2022 12:46 PM, Dmitry Baryshkov wrote:
> > On 26/10/2022 21:58, Elliot Berman wrote:
> >> Fix build error when CONFIG_ARM64_SVE is selected and
> >> asm/alternative-macros.h wasn't implicitly included by another header.
> >
> > Please include the build error into the commit message to help anybody
> > looking for the solution for the same issue.
> >
>
> Now that the gunyah_hypercall implementation has been moved to its own
> module, this change isn't needed because asm/alternative-macros.h got
> implicitly included now. I can drop this, although not sure if we think
> it's still correct to have it?
>
> After I got rid of the other header files, for reference:
>
> In file included from arch/arm64/gunyah/gunyah_hypercall.c:6:
> arch/arm64/gunyah/gunyah_hypercall.c: In function ‘gh_hypercall_msgq_send’:
> ./include/linux/arm-smccc.h:387:25: error: expected string literal
> before ‘ALTERNATIVE’
>    387 | #define SMCCC_SVE_CHECK ALTERNATIVE("nop \n",  "bl
> __arm_smccc_sve_check \n", \

Please add this message to the commit log.

>
> >>
> >> Signed-off-by: Elliot Berman <quic_eberman@xxxxxxxxxxx>
> >> ---
> >>   include/linux/arm-smccc.h | 1 +
> >>   1 file changed, 1 insertion(+)
> >>
> >> diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h
> >> index 220c8c60e021..6a627cdbbdec 100644
> >> --- a/include/linux/arm-smccc.h
> >> +++ b/include/linux/arm-smccc.h
> >> @@ -383,6 +383,7 @@ asmlinkage void __arm_smccc_hvc(unsigned long a0,
> >> unsigned long a1,
> >>   /* nVHE hypervisor doesn't have a current thread so needs separate
> >> checks */
> >>   #if defined(CONFIG_ARM64_SVE) && !defined(__KVM_NVHE_HYPERVISOR__)
> >> +#include <asm/alternative-macros.h>
> >>   #define SMCCC_SVE_CHECK ALTERNATIVE("nop \n",  "bl
> >> __arm_smccc_sve_check \n", \
> >>                       ARM64_SVE)
> >



-- 
With best wishes
Dmitry