[PATCH] x86/S3: Fix Shadow Stack resume path

[Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>]

Fix the resume path to load the shadow stack pointer from saved_ssp (not
saved_rsp), to match what suspend path does.

Signed-off-by: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
Fixes: 633ecc4a7cb2 ("x86/S3: Save and restore Shadow Stack configuration")
Backport: 4.14
---
 xen/arch/x86/acpi/wakeup_prot.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/x86/acpi/wakeup_prot.S b/xen/arch/x86/acpi/wakeup_prot.S
index a2c41c4f3f26..c6b3fcc93d93 100644
--- a/xen/arch/x86/acpi/wakeup_prot.S
+++ b/xen/arch/x86/acpi/wakeup_prot.S
@@ -69,7 +69,7 @@ ENTRY(s3_resume)
          * so SETSSBSY will successfully load a value useful for us, then
          * reset MSR_PL0_SSP to its usual value and pop the temporary token.
          */
-        mov     saved_rsp(%rip), %rdi
+        mov     saved_ssp(%rip), %rdi
         cmpq    $1, %rdi
         je      .L_shstk_done
 
-- 
2.25.4