linux-kernel - [PATCH next] ARM: virt: fix build of hyp-stub

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Message-Id: <1455838277-11083-1-git-send-email-vincent.stehle@laposte.net>
Date:	Fri, 19 Feb 2016 00:31:17 +0100
From:	Vincent Stehlé <vincent.stehle@...oste.net>
To:	linux-next@...r.kernel.org
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Vincent Stehlé <vincent.stehle@...oste.net>,
	Jean-Philippe Brucker <jean-philippe.brucker@....com>,
	Marc Zyngier <marc.zyngier@....com>,
	Russell King <rmk+kernel@....linux.org.uk>
Subject: [PATCH next] ARM: virt: fix build of hyp-stub

Compile hyp-stub explicitly for arm v7-a. This fixes the following build
errors:

  arch/arm/kernel/hyp-stub.S: Assembler messages:
  arch/arm/kernel/hyp-stub.S:168: Error: selected processor does not support `ubfx r7,r7,#28,#4' in ARM mode
  arch/arm/kernel/hyp-stub.S:176: Error: selected processor does not support `isb' in ARM mode

Signed-off-by: Vincent Stehlé <vincent.stehle@...oste.net>
Cc: Jean-Philippe Brucker <jean-philippe.brucker@....com>
Cc: Marc Zyngier <marc.zyngier@....com>
Cc: Russell King <rmk+kernel@....linux.org.uk>
---


Hi,

This can be seen with linux next-20160218 and arm e.g. allmodconfig.

Best regards,

V.


 arch/arm/kernel/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 2c5f160..15684c5 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -88,6 +88,8 @@ obj-$(CONFIG_DEBUG_LL)	+= debug.o
 obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
 
 obj-$(CONFIG_ARM_VIRT_EXT)	+= hyp-stub.o
+AFLAGS_hyp-stub.o		:=-Wa,-march=armv7-a
+
 ifeq ($(CONFIG_ARM_PSCI),y)
 obj-$(CONFIG_SMP)		+= psci_smp.o
 endif
-- 
2.7.0