xen/pvh: increase early stack size

While booting on an AMD EPYC box the stack canary would detect stack
overflows when using the current PVH early stack size (256). Switch to
using the value defined by BOOT_STACK_SIZE, which prevents the stack
overflow.

Cc: <[email protected]> # 4.11
Signed-off-by: Roger Pau Monné <[email protected]>
Reviewed-by: Juergen Gross <[email protected]>
Signed-off-by: Juergen Gross <[email protected]>

diff --git a/arch/x86/xen/xen-pvh.S b/arch/x86/xen/xen-pvh.S
index b0e471506cd8adcb06b3b0f620df5df41b83399b..1f8825bbaffbf7b87557de9ad1f6f1a67823cc4d 100644 (file)
--- a/arch/x86/xen/xen-pvh.S
+++ b/arch/x86/xen/xen-pvh.S
@@ -170,7 +170,7 @@ canary:
        .fill 48, 1, 0
 
 early_stack:
-       .fill 256, 1, 0
+       .fill BOOT_STACK_SIZE, 1, 0
 early_stack_end:
 
        ELFNOTE(Xen, XEN_ELFNOTE_PHYS32_ENTRY,