FAILED: patch "[PATCH] arm/arm64: smccc: Make function identifiers an unsigned" failed to apply to 4.15-stable tree
The patch below does not apply to the 4.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From ded4c39e93f3b72968fdb79baba27f3b83dad34c Mon Sep 17 00:00:00 2001
From: Marc Zyngier marc.zyngier@arm.com Date: Tue, 6 Feb 2018 17:56:18 +0000 Subject: [PATCH] arm/arm64: smccc: Make function identifiers an unsigned quantity
Function identifiers are a 32bit, unsigned quantity. But we never tell so to the compiler, resulting in the following:
4ac: b26187e0 mov x0, #0xffffffff80000001
We thus rely on the firmware narrowing it for us, which is not always a reasonable expectation.
Cc: stable@vger.kernel.org Reported-by: Ard Biesheuvel ard.biesheuvel@linaro.org Acked-by: Ard Biesheuvel ard.biesheuvel@linaro.org Reviewed-by: Robin Murphy robin.murphy@arm.com Tested-by: Ard Biesheuvel ard.biesheuvel@linaro.org Signed-off-by: Marc Zyngier marc.zyngier@arm.com Signed-off-by: Catalin Marinas catalin.marinas@arm.com
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index e1ef944ef1da..dd44d8458c04 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -14,14 +14,16 @@ #ifndef __LINUX_ARM_SMCCC_H #define __LINUX_ARM_SMCCC_H
+#include <uapi/linux/const.h> + /* * This file provides common defines for ARM SMC Calling Convention as * specified in * http://infocenter.arm.com/help/topic/com.arm.doc.den0028a/index.html */
-#define ARM_SMCCC_STD_CALL 0 -#define ARM_SMCCC_FAST_CALL 1 +#define ARM_SMCCC_STD_CALL _AC(0,U) +#define ARM_SMCCC_FAST_CALL _AC(1,U) #define ARM_SMCCC_TYPE_SHIFT 31
#define ARM_SMCCC_SMC_32 0
Hi Greg,
On 19/02/18 16:28, gregkh@linuxfoundation.org wrote:
The patch below does not apply to the 4.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
Looks like this change is already present in the 4.14.y and 4.15.y trees (as 37dc3e6c117e and 5fa82723fa1b respectively) by virtue of the explicit security series backports, so all seems good.
Robin.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From ded4c39e93f3b72968fdb79baba27f3b83dad34c Mon Sep 17 00:00:00 2001 From: Marc Zyngier marc.zyngier@arm.com Date: Tue, 6 Feb 2018 17:56:18 +0000 Subject: [PATCH] arm/arm64: smccc: Make function identifiers an unsigned quantity
Function identifiers are a 32bit, unsigned quantity. But we never tell so to the compiler, resulting in the following:
4ac: b26187e0 mov x0, #0xffffffff80000001
We thus rely on the firmware narrowing it for us, which is not always a reasonable expectation.
Cc: stable@vger.kernel.org Reported-by: Ard Biesheuvel ard.biesheuvel@linaro.org Acked-by: Ard Biesheuvel ard.biesheuvel@linaro.org Reviewed-by: Robin Murphy robin.murphy@arm.com Tested-by: Ard Biesheuvel ard.biesheuvel@linaro.org Signed-off-by: Marc Zyngier marc.zyngier@arm.com Signed-off-by: Catalin Marinas catalin.marinas@arm.com
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index e1ef944ef1da..dd44d8458c04 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -14,14 +14,16 @@ #ifndef __LINUX_ARM_SMCCC_H #define __LINUX_ARM_SMCCC_H +#include <uapi/linux/const.h>
- /*
*/
- This file provides common defines for ARM SMC Calling Convention as
- specified in
- http://infocenter.arm.com/help/topic/com.arm.doc.den0028a/index.html
-#define ARM_SMCCC_STD_CALL 0 -#define ARM_SMCCC_FAST_CALL 1 +#define ARM_SMCCC_STD_CALL _AC(0,U) +#define ARM_SMCCC_FAST_CALL _AC(1,U) #define ARM_SMCCC_TYPE_SHIFT 31 #define ARM_SMCCC_SMC_32 0
linux-stable-mirror@lists.linaro.org
-
gregkh＠linuxfoundation.org -
Robin Murphy