[PATCH 4.12 042/106] ARM: mvebu: use __pa_symbol in the mv98dx3236 platform SMP code

[Greg Kroah-Hartman]

4.12-stable review patch.  If anyone has any objections, please let me know.

--

From: Gregory CLEMENT 

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 
Tested-by: Chris Packham 
Signed-off-by: Gregory CLEMENT 
Signed-off-by: Greg Kroah-Hartman 

---
 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);
 

[PATCH 4.12 042/106] ARM: mvebu: use __pa_symbol in the mv98dx3236 platform SMP code

[Greg Kroah-Hartman]

4.12-stable review patch.  If anyone has any objections, please let me know.

--

From: Gregory CLEMENT 

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 
Tested-by: Chris Packham 
Signed-off-by: Gregory CLEMENT 
Signed-off-by: Greg Kroah-Hartman 

---
 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);