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SubjectRe: [PATCH v3 4/5] x86/head/64: Check SEV encryption before switching to kernel page-table
On Wed, Oct 21, 2020 at 02:39:37PM +0200, Joerg Roedel wrote:
> diff --git a/arch/x86/mm/mem_encrypt.c b/arch/x86/mm/mem_encrypt.c
> index ebb7edc8bc0a..bd9b62af2e3d 100644
> --- a/arch/x86/mm/mem_encrypt.c
> +++ b/arch/x86/mm/mem_encrypt.c
> @@ -39,6 +39,7 @@
> */
> u64 sme_me_mask __section(.data) = 0;
> u64 sev_status __section(.data) = 0;
> +u64 sev_check_data __section(.data) = 0;

Apparently section names are supposed to be given as strings now:

In file included from ././include/linux/compiler_types.h:65,
from <command-line>:
arch/x86/mm/mem_encrypt.c:42:30: error: expected expression before ‘.’ token
42 | u64 sev_check_data __section(.data) = 0;
| ^
./include/linux/compiler_attributes.h:257:68: note: in definition of macro ‘__section’
257 | #define __section(section) __attribute__((__section__(section)))
| ^~~~~~~
arch/x86/mm/mem_encrypt.c:42:30: error: section attribute argument not a string constant
42 | u64 sev_check_data __section(.data) = 0;
| ^
./include/linux/compiler_attributes.h:257:68: note: in definition of macro ‘__section’
257 | #define __section(section) __attribute__((__section__(section)))
| ^~~~~~~
make[2]: *** [scripts/Makefile.build:283: arch/x86/mm/mem_encrypt.o] Error 1
make[1]: *** [scripts/Makefile.build:500: arch/x86/mm] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1799: arch/x86] Error 2
make: *** Waiting for unfinished jobs....

--
Regards/Gruss,
Boris.

https://people.kernel.org/tglx/notes-about-netiquette

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