This is a note to let you know that I've just added the patch titled
ARM: mvebu: use __pa_symbol in the mv98dx3236 platform SMP code
to the 4.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm-mvebu-use-__pa_symbol-in-the-mv98dx3236-platform-smp-code.patch
and it can be found in the queue-4.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 76127d6fe00062bddb25515d8a4f44633c41fe14 Mon Sep 17 00:00:00 2001
From: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
Date: Fri, 7 Jul 2017 09:59:28 +0200
Subject: ARM: mvebu: use __pa_symbol in the mv98dx3236 platform SMP code
From: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
commit 76127d6fe00062bddb25515d8a4f44633c41fe14 upstream.
As we already did for Armada XP switch from virt_to_phys() to
__pa_symbol().
The reason for it was well explained by Mark Rutland so let's quote him:
"virt_to_phys() is intended to operate on the linear/direct mapping of
RAM.
__pa_symbol() is intended to operate on the kernel mapping, which may
not be in the linear/direct mapping on all architectures. e.g. arm64 and
x86_64 map the kernel image and RAM separately.
On 32-bit ARM the kernel image mapping is tied to the linear/direct
mapping, so that works, but as it's semantically wrong (and broken for
generic code), the DEBUG_VIRTUAL checks complain."
Fixes: db88977894ab ("arm: mvebu: support for SMP on 98DX3336 SoC")
Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Tested-by: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/mach-mvebu/platsmp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/mach-mvebu/platsmp.c
+++ b/arch/arm/mach-mvebu/platsmp.c
@@ -211,7 +211,7 @@ static int mv98dx3236_resume_set_cpu_boo
return PTR_ERR(base);
writel(0, base + MV98DX3236_CPU_RESUME_CTRL_REG);
- writel(virt_to_phys(boot_addr), base + MV98DX3236_CPU_RESUME_ADDR_REG);
+ writel(__pa_symbol(boot_addr), base + MV98DX3236_CPU_RESUME_ADDR_REG);
iounmap(base);
Patches currently in stable-queue which might be from gregory.clement@xxxxxxxxxxxxxxxxxx are
queue-4.12/arm-mvebu-use-__pa_symbol-in-the-mv98dx3236-platform-smp-code.patch
queue-4.12/arm-dts-armada-38x-fix-irq-type-for-pca955.patch
queue-4.12/arm64-dts-marvell-armada-37xx-fix-the-number-of-gpio-on-south-bridge.patch