From: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
This patch has been added to the 3.18 stable tree. If you have any
objections, please let us know.
===============
[ Upstream commit 5054daa285beaf706f051fbd395dc36c9f0f907f ]
Commit 1e02ce4cccdc ("x86: Store a per-cpu shadow copy of CR4")
introduced CR4 shadows.
These shadows are initialized in early boot code. The commit missed
initialization for 64-bit PV(H) guests that this patch adds.
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
Signed-off-by: David Vrabel <david.vrabel@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
arch/x86/xen/enlighten.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index e180e09..d8d81d1 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1772,6 +1772,7 @@ asmlinkage __visible void __init xen_start_kernel(void)
#ifdef CONFIG_X86_32
i386_start_kernel();
#else
+ cr4_init_shadow(); /* 32b kernel does this in i386_start_kernel() */
x86_64_start_reservations((char *)__pa_symbol(&boot_params));
#endif
}
--
2.1.4
--
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