Hi Borislav:
Thanks for your review.
On 5/31/2021 2:25 AM, Borislav Petkov wrote:
On Sun, May 30, 2021 at 11:06:20AM -0400, Tianyu Lan wrote:
diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c
index 156cd235659f..a82975600107 100644
--- a/arch/x86/mm/pat/set_memory.c
+++ b/arch/x86/mm/pat/set_memory.c
@@ -29,6 +29,8 @@
#include <asm/proto.h>
#include <asm/memtype.h>
#include <asm/set_memory.h>
+#include <asm/hyperv-tlfs.h>
+#include <asm/mshyperv.h>
#include "../mm_internal.h"
@@ -1986,8 +1988,14 @@ static int __set_memory_enc_dec(unsigned long addr, int numpages, bool enc)
int ret;
/* Nothing to do if memory encryption is not active */
- if (!mem_encrypt_active())
+ if (hv_is_isolation_supported()) {
+ return hv_set_mem_host_visibility((void *)addr,
+ numpages * HV_HYP_PAGE_SIZE,
+ enc ? VMBUS_PAGE_NOT_VISIBLE
+ : VMBUS_PAGE_VISIBLE_READ_WRITE);
Put all this gunk in a hv-specific function somewhere in hv-land which
you only call from here. This way you probably won't even need to export
hv_set_mem_host_visibility() and so on...
Good idea. Will update. Thanks.
