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    Subject[PATCH v6 35/42] x86/compressed/64: store Confidential Computing blob address in bootparams
    Date
    From: Michael Roth <michael.roth@amd.com>

    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@amd.com>
    Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
    ---
    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
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