[PATCHv3 2/7] arm64: Switch to ldr for loading the stub vectors

Laura Abbott lauraa at codeaurora.org
Wed Aug 20 18:20:34 PDT 2014


The hyp stub vectors are currently loaded using adr. This
instruction has a +/- 1MB range for the loading address. If
the alignment for sections is changed. the address may be more
than 1MB away, resulting in reclocation errors. Switch to using
ldr for getting the address to ensure we aren't affected by the
location of the __hyp_stub_vectors.

Signed-off-by: Laura Abbott <lauraa at codeaurora.org>
---
 arch/arm64/kernel/head.S | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
index 144f105..61bc210 100644
--- a/arch/arm64/kernel/head.S
+++ b/arch/arm64/kernel/head.S
@@ -331,7 +331,8 @@ CPU_LE(	movk	x0, #0x30d0, lsl #16	)	// Clear EE and E0E on LE systems
 	msr	vttbr_el2, xzr
 
 	/* Hypervisor stub */
-	adr	x0, __hyp_stub_vectors
+	adrp	x0, __hyp_stub_vectors
+	add	x0, x0, #:lo12:__hyp_stub_vectors
 	msr	vbar_el2, x0
 
 	/* spsr */
-- 
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