On Mon, Jul 11, 2022 at 10:38:48AM +0200, Thomas Bogendoerfer wrote:
> On Thu, Jul 07, 2022 at 02:52:36PM -0700, Florian Fainelli wrote:
> > It is permissible for kernel code to call virt_to_phys() against virtual
> > addresses that are in KSEG0 or KSEG1 and we need to be dealing with both
> > types. Add a final condition that ensures that the virtual address is
> > below KSEG2.
> >
> > Fixes: dfad83cb7193 ("MIPS: Add support for CONFIG_DEBUG_VIRTUAL")
> > Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
> > ---
> > arch/mips/mm/physaddr.c | 3 ++-
> > 1 file changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/arch/mips/mm/physaddr.c b/arch/mips/mm/physaddr.c
> > index a1ced5e44951..a82f8f57a652 100644
> > --- a/arch/mips/mm/physaddr.c
> > +++ b/arch/mips/mm/physaddr.c
> > @@ -5,6 +5,7 @@
> > #include <linux/mmdebug.h>
> > #include <linux/mm.h>
> >
> > +#include <asm/addrspace.h>
> > #include <asm/sections.h>
> > #include <asm/io.h>
> > #include <asm/page.h>
> > @@ -30,7 +31,7 @@ static inline bool __debug_virt_addr_valid(unsigned long x)
> > if (x == MAX_DMA_ADDRESS)
> > return true;
> >
> > - return false;
> > + return KSEGX(x) < KSEG2;
> > }
> >
> > phys_addr_t __virt_to_phys(volatile const void *x)
> > --
> > 2.25.1
>
> applied to mips-next.
Are you sure it was ready to be applied?
Link: https://lore.kernel.org/linux-mips/20220708115851.ejsooiilxcopkoei@mobilestation/
-Sergey
>
> Thomas.
>
> --
> Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
> good idea. [ RFC1925, 2.3 ]
