[PATCH v6 04/21] arm64: smccc: Include alternative-macros.h
Elliot Berman
quic_eberman at quicinc.com
Wed Oct 26 13:23:56 PDT 2022
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", \
>>
>> Signed-off-by: Elliot Berman <quic_eberman at quicinc.com>
>> ---
>> 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)
>
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