From: Michael Roth <michael.roth@xxxxxxx> When the Confidential Computing blob is located by the boot/compressed kernel, store a pointer to it in bootparams->cc_blob_address to avoid the need for the run-time kernel to rescan the EFI config table to find it again. Signed-off-by: Michael Roth <michael.roth@xxxxxxx> Signed-off-by: Brijesh Singh <brijesh.singh@xxxxxxx> --- arch/x86/boot/compressed/sev.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/x86/boot/compressed/sev.c b/arch/x86/boot/compressed/sev.c index 60885d80bf5f..9d6a2ecb609f 100644 --- a/arch/x86/boot/compressed/sev.c +++ b/arch/x86/boot/compressed/sev.c @@ -375,4 +375,11 @@ void snp_cpuid_init_boot(struct boot_params *bp) /* It should be safe to read SEV MSR and check features now. */ if (!sev_snp_enabled()) sev_es_terminate(1, GHCB_TERM_CPUID); + + /* + * Pass run-time kernel a pointer to CC info via boot_params so EFI + * config table doesn't need to be searched again during early startup + * phase. + */ + bp->cc_blob_address = (u32)(unsigned long)cc_info; } -- 2.25.1
