Re: [PATCH v2 06/12] x86/sev: Cache AP Jump Table Address

Borislav Petkov
2021-11-08T18:14:24Z

On Mon, Sep 13, 2021 at 05:55:57PM +0200, Joerg Roedel wrote:
> From: Joerg Roedel <jroedel@suse.de>
>
> Store the physical address of the AP Jump Table in kernel memory so
> that it does not need to be fetched from the Hypervisor again.
>
> Signed-off-by: Joerg Roedel <jroedel@suse.de>
> ---
> arch/x86/kernel/sev.c | 26 ++++++++++++++------------
> 1 file changed, 14 insertions(+), 12 deletions(-)
>
> diff --git a/arch/x86/kernel/sev.c b/arch/x86/kernel/sev.c
> index 5d3422e8b25e..eedba56b6bac 100644
> --- a/arch/x86/kernel/sev.c
> +++ b/arch/x86/kernel/sev.c
> @@ -42,6 +42,9 @@ static struct ghcb boot_ghcb_page __bss_decrypted __aligned(PAGE_SIZE);
> */
> static struct ghcb __initdata *boot_ghcb;
>
> +/* Cached AP Jump Table Address */
> +static phys_addr_t sev_es_jump_table_pa;

This is static, so "jump_table_pa" should be enough.

Also, to the prefixes, everything which is not SEV-ES only, should be
simply prefixed with "sev_" if externally visible.

Thx.

--
Regards/Gruss,
Boris.