Re: [PATCH v2] MIPS: Add support for CONFIG_DEBUG_VIRTUAL

On 3/25/2021 2:57 AM, Thomas Bogendoerfer wrote:

On Tue, Mar 23, 2021 at 03:20:43PM -0700, Florian Fainelli wrote:

quoted

Provide hooks to intercept bad usages of virt_to_phys() and
__pa_symbol() throughout the kernel. To make this possible, we need to
rename the current implement of virt_to_phys() into
__virt_to_phys_nodebug() and wrap it around depending on
CONFIG_DEBUG_VIRTUAL.

A similar thing is needed for __pa_symbol() which is now aliased to
__phys_addr_symbol() whose implementation is either the direct return of
RELOC_HIDE or goes through the debug version.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
Changes in v2:
- fixed sparse warning in arch/mips/kernel/vdso.c

checkpatch warns about a missing SPDX license in arch/mips/mm/physaddr.c,
can you please add one ?

Yes.

And as checkpatch is also unhappy about the volatiles, do we really
need them here ?

This is just following the existing prototypes for virt_to_phys()
declared in arch/mips/include/asm/io.h. This can be changed to unsigned
long if you prefer?
-- 
Florian