On 12/9/2022 5:52 AM, Dexuan Cui wrote:
@@ -134,6 +136,16 @@ int hv_common_cpu_init(unsigned int cpu)
if (!(*inputarg))
return -ENOMEM;
+ if (hv_isolation_type_en_snp()) {
+ ret = set_memory_decrypted((unsigned long)*inputarg, 1);
Is it possible hv_root_partition==1 here? If yes, the pgcount is 2.
Hi Dexuan:
Thanks for review. So far, root partition doesn't support sev
enlightened guest and so here assume pgcount is always 1. We may use
pgcount variable here instead of the number.
+ if (ret) {
+ kfree(*inputarg);
+ return ret;
+ }
+
+ memset(*inputarg, 0x00, PAGE_SIZE);
+ }
+
if (hv_root_partition) {
outputarg = (void **)this_cpu_ptr(hyperv_pcpu_output_arg);
*outputarg = (char *)(*inputarg) + HV_HYP_PAGE_SIZE;
@@ -168,6 +180,9 @@ int hv_common_cpu_die(unsigned int cpu)
local_irq_restore(flags);
+ if (hv_isolation_type_en_snp())
+ set_memory_encrypted((unsigned long)mem, 1);
If set_memory_encrypted() fails, we should not free the 'mem'.
Good point. Will update in the next version.
