[ 38/76] xen/bootup: allow read_tscp call for Xen PV guests.
From: Greg Kroah-Hartman
Date: Thu Oct 18 2012 - 23:01:03 EST
3.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
commit cd0608e71e9757f4dae35bcfb4e88f4d1a03a8ab upstream.
The hypervisor will trap it. However without this patch,
we would crash as the .read_tscp is set to NULL. This patch
fixes it and sets it to the native_read_tscp call.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/xen/enlighten.c | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1175,6 +1175,8 @@ static const struct pv_cpu_ops xen_cpu_o
.read_tsc = native_read_tsc,
.read_pmc = native_read_pmc,
+ .read_tscp = native_read_tscp,
+
.iret = xen_iret,
.irq_enable_sysexit = xen_sysexit,
#ifdef CONFIG_X86_64
--
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