Messages in this thread Patch in this message | | | From | "Jiri Slaby (SUSE)" <> | Subject | [PATCH 14/46] x86/sev, lto: Mark cpuid_table_copy as __visible_on_lto | Date | Mon, 14 Nov 2022 12:43:12 +0100 |
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From: Martin Liska <mliska@suse.cz>
Symbols referenced from assembler (either directly or e.f. from DEFINE_STATIC_KEY()) need to be global and visible in gcc LTO because they could end up in a different object file than the assembler. This can lead to linker errors without this patch.
So mark cpuid_table_copy as __visible_on_lto.
[js] use __visible_on_lto
Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: x86@kernel.org Signed-off-by: Martin Liska <mliska@suse.cz> Signed-off-by: Jiri Slaby <jslaby@suse.cz> --- arch/x86/kernel/sev-shared.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/sev-shared.c b/arch/x86/kernel/sev-shared.c index 3a5b0c9c4fcc..554da8aabfc7 100644 --- a/arch/x86/kernel/sev-shared.c +++ b/arch/x86/kernel/sev-shared.c @@ -64,7 +64,7 @@ struct snp_cpuid_table { static u16 ghcb_version __ro_after_init; /* Copy of the SNP firmware's CPUID page. */ -static struct snp_cpuid_table cpuid_table_copy __ro_after_init; +__visible_on_lto struct snp_cpuid_table cpuid_table_copy __ro_after_init; /* * These will be initialized based on CPUID table so that non-present -- 2.38.1
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