[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-devel] [PATCH 10/17] xen: arm64: disable alignment traps

The mem* primitives which I am about to import from Linux in a subsequent
patch rely on the hardware handling misalignment.

The benefits of an optimised memcpy etc oughtweigh the downsides.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
 xen/arch/arm/arm64/head.S |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/arm/arm64/head.S b/xen/arch/arm/arm64/head.S
index 9547ef5..22d0030 100644
--- a/xen/arch/arm/arm64/head.S
+++ b/xen/arch/arm/arm64/head.S
@@ -241,7 +241,7 @@ skip_bss:
          * I-cache enabled,
          * Alignment checking enabled,
          * MMU translation disabled (for now). */
-        ldr   x0, =(HSCTLR_BASE|SCTLR_A)
+        ldr   x0, =(HSCTLR_BASE)
         msr   SCTLR_EL2, x0
         /* Rebuild the boot pagetable's first-level entries. The structure

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.