On 7/30/21 5:34 PM, Sean Christopherson wrote:
On Tue, Jul 27, 2021, Tom Lendacky wrote:
quoted
@@ -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?
Probably just a slip on my part. I was debating at one point calling the
helper vs. referencing the variables/functions directly in the
mem_encrypt.c file.
Thanks,
Tom
quoted
r = set_memory_encrypted(vaddr, npages);
if (r) {
pr_warn("failed to free unused decrypted pages\n");
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