| Date | Tue, 10 Aug 2021 11:17:07 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH Part1 RFC v4 02/36] x86/sev: Save the negotiated GHCB version |
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On Wed, Jul 07, 2021 at 01:14:32PM -0500, Brijesh Singh wrote: > diff --git a/arch/x86/kernel/sev-shared.c b/arch/x86/kernel/sev-shared.c > index 114f62fe2529..19c2306ac02d 100644 > --- a/arch/x86/kernel/sev-shared.c > +++ b/arch/x86/kernel/sev-shared.c > @@ -14,6 +14,15 @@ > #define has_cpuflag(f) boot_cpu_has(f) > #endif > > +/* > + * Since feature negotiation related variables are set early in the boot > + * process they must reside in the .data section so as not to be zeroed > + * out when the .bss section is later cleared. > + * > + * GHCB protocol version negotiated with the hypervisor. > + */ > +static u16 ghcb_version __section(".data..ro_after_init");
There's a define for that section specifier: __ro_after_init
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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