Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has()

From: Sean Christopherson <seanjc@google.com>
Date: 2021-07-30 22:34:49
Also in: amd-gfx, dri-devel, kexec, kvm, linux-efi, linux-fsdevel, linux-iommu, linux-s390, lkml, platform-driver-x86
Reply to: Tom Lendacky, 2021-07-27

On Tue, Jul 27, 2021, Tom Lendacky wrote:

quoted hunk ↗ jump to hunk

@@ -451,7 +450,7 @@ void __init mem_encrypt_free_decrypted_mem(void)
 	 * The unused memory range was mapped decrypted, change the encryption
 	 * attribute from decrypted to encrypted before freeing it.
 	 */
-	if (mem_encrypt_active()) {
+	if (sme_me_mask) {

Any reason this uses sme_me_mask?  The helper it calls, __set_memory_enc_dec(),
uses prot_guest_has(PATTR_MEM_ENCRYPT) so I assume it's available?

 		r = set_memory_encrypted(vaddr, npages);
 		if (r) {
 			pr_warn("failed to free unused decrypted pages\n");

Tom Lendacky · 2021-07-27
[PATCH 01/11] mm: Introduce a function to check for virtualization protection features · Tom Lendacky · 2021-07-27
Re: [PATCH 01/11] mm: Introduce a function to check for virtualization protection features · Christoph Hellwig · 2021-07-28
Re: [PATCH 01/11] mm: Introduce a function to check for virtualization protection features · Borislav Petkov · 2021-07-28
Re: [PATCH 01/11] mm: Introduce a function to check for virtualization protection features · Joerg Roedel · 2021-08-02
Re: [PATCH 01/11] mm: Introduce a function to check for virtualization protection features · Kuppuswamy, Sathyanarayanan · 2021-08-11
Re: [PATCH 01/11] mm: Introduce a function to check for virtualization protection features · Tom Lendacky · 2021-08-11
[PATCH 02/11] x86/sev: Add an x86 version of prot_guest_has() · Tom Lendacky · 2021-07-27
Re: [PATCH 02/11] x86/sev: Add an x86 version of prot_guest_has() · Christoph Hellwig · 2021-07-28
Re: [PATCH 02/11] x86/sev: Add an x86 version of prot_guest_has() · Tom Lendacky · 2021-07-29
Re: [PATCH 02/11] x86/sev: Add an x86 version of prot_guest_has() · Joerg Roedel · 2021-08-02
[PATCH 03/11] powerpc/pseries/svm: Add a powerpc version of prot_guest_has() · Tom Lendacky · 2021-07-27
[PATCH 04/11] x86/sme: Replace occurrences of sme_active() with prot_guest_has() · Tom Lendacky · 2021-07-27
Re: [PATCH 04/11] x86/sme: Replace occurrences of sme_active() with prot_guest_has() · Joerg Roedel · 2021-08-02
[PATCH 05/11] x86/sev: Replace occurrences of sev_active() with prot_guest_has() · Tom Lendacky · 2021-07-27
Re: [PATCH 05/11] x86/sev: Replace occurrences of sev_active() with prot_guest_has() · Joerg Roedel · 2021-08-02
[PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has() · Tom Lendacky · 2021-07-27
Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has() · Sean Christopherson · 2021-07-30
Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has() · Tom Lendacky · 2021-08-09
Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has() · Christophe Leroy · 2021-08-02
Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has() · Tom Lendacky · 2021-08-09
Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has() · Kuppuswamy, Sathyanarayanan · 2021-08-10
Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has() · Tom Lendacky · 2021-08-10
Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has() · Kuppuswamy, Sathyanarayanan · 2021-08-10
Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has() · Kirill A. Shutemov · 2021-08-11
Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has() · Tom Lendacky · 2021-08-11
Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has() · Kirill A. Shutemov · 2021-08-12
Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has() · Tom Lendacky · 2021-08-13
Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has() · Tom Lendacky · 2021-08-13
[PATCH 06/11] x86/sev: Replace occurrences of sev_es_active() with prot_guest_has() · Tom Lendacky · 2021-07-27
Re: [PATCH 06/11] x86/sev: Replace occurrences of sev_es_active() with prot_guest_has() · Joerg Roedel · 2021-08-02
Re: [PATCH 06/11] x86/sev: Replace occurrences of sev_es_active() with prot_guest_has() · Tom Lendacky · 2021-08-09
Re: [PATCH 06/11] x86/sev: Replace occurrences of sev_es_active() with prot_guest_has() · Kuppuswamy, Sathyanarayanan · 2021-08-09
[PATCH 08/11] mm: Remove the now unused mem_encrypt_active() function · Tom Lendacky · 2021-07-27
Re: [PATCH 08/11] mm: Remove the now unused mem_encrypt_active() function · Joerg Roedel · 2021-08-02
[PATCH 09/11] x86/sev: Remove the now unused mem_encrypt_active() function · Tom Lendacky · 2021-07-27
Re: [PATCH 09/11] x86/sev: Remove the now unused mem_encrypt_active() function · Joerg Roedel · 2021-08-02
[PATCH 10/11] powerpc/pseries/svm: Remove the now unused mem_encrypt_active() function · Tom Lendacky · 2021-07-27
[PATCH 11/11] s390/mm: Remove the now unused mem_encrypt_active() function · Tom Lendacky · 2021-07-27
Tom Lendacky · 2021-07-27
Christian König · 2021-07-28
Kuppuswamy, Sathyanarayanan · 2021-08-09
Tom Lendacky · 2021-08-09
View all 43 messages

`h`	back out one level
`j`	next message in thread / next series-diff position
`k`	previous message in thread / previous series-diff position
`l`	drill in
`Esc`	close help / fold thread tree
`?`	toggle this help