Messages in this thread | | | Subject | Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has() | From | "Kuppuswamy, Sathyanarayanan" <> | Date | Tue, 10 Aug 2021 11:45:04 -0700 |
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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.
-- Sathyanarayanan Kuppuswamy Linux Kernel Developer
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