From: Tom Lendacky <thomas.lendacky@xxxxxxx> When SEV is active the trampoline area will need to be in encrypted memory so only mark the area decrypted if SME is active. Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: "H. Peter Anvin" <hpa@xxxxxxxxx> Cc: Borislav Petkov <bp@xxxxxxx> Cc: Andy Lutomirski <luto@xxxxxxxxxx> Cc: Laura Abbott <labbott@xxxxxxxxxx> Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> Cc: linux-kernel@xxxxxxxxxxxxxxx Cc: x86@xxxxxxxxxx Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx> Signed-off-by: Brijesh Singh <brijesh.singh@xxxxxxx> --- arch/x86/realmode/init.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c index 1f71980fc5e0..d03125c2b73b 100644 --- a/arch/x86/realmode/init.c +++ b/arch/x86/realmode/init.c @@ -63,9 +63,10 @@ static void __init setup_real_mode(void) /* * If SME is active, the trampoline area will need to be in * decrypted memory in order to bring up other processors - * successfully. + * successfully. This is not needed for SEV. */ - set_memory_decrypted((unsigned long)base, size >> PAGE_SHIFT); + if (sme_active()) + set_memory_decrypted((unsigned long)base, size >> PAGE_SHIFT); memcpy(base, real_mode_blob, size); -- 2.9.5
