On 7/27/21 3:26 PM, Tom Lendacky wrote:
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index de01903c3735..cafed6456d45 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -19,7 +19,7 @@ #include <linux/start_kernel.h> #include <linux/io.h> #include <linux/memblock.h> -#include <linux/mem_encrypt.h> +#include <linux/protected_guest.h> #include <linux/pgtable.h>
#include <asm/processor.h> @@ -285,7 +285,7 @@ unsigned long __head __startup_64(unsigned long physaddr, * there is no need to zero it after changing the memory encryption * attribute. */
- if (mem_encrypt_active()) {
- if (prot_guest_has(PATTR_MEM_ENCRYPT)) { vaddr = (unsigned long)__start_bss_decrypted; vaddr_end = (unsigned long)__end_bss_decrypted;
Since this change is specific to AMD, can you replace PATTR_MEM_ENCRYPT with prot_guest_has(PATTR_SME) || prot_guest_has(PATTR_SEV). It is not used in TDX.