Messages in this thread | | | From | Andreas Schwab <> | Subject | Re: [PATCH v5 13/16] powerpc/mm/32s: Use BATs for STRICT_KERNEL_RWX | Date | Sun, 16 Jun 2019 10:45:46 +0200 |
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On Jun 16 2019, christophe leroy <christophe.leroy@c-s.fr> wrote:
> Le 15/06/2019 à 14:28, Andreas Schwab a écrit : >> On Feb 21 2019, Christophe Leroy <christophe.leroy@c-s.fr> wrote: >> >>> diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c >>> index a000768a5cc9..6e56a6240bfa 100644 >>> --- a/arch/powerpc/mm/pgtable_32.c >>> +++ b/arch/powerpc/mm/pgtable_32.c >>> @@ -353,7 +353,10 @@ void mark_initmem_nx(void) >>> unsigned long numpages = PFN_UP((unsigned long)_einittext) - >>> PFN_DOWN((unsigned long)_sinittext); >>> - change_page_attr(page, numpages, PAGE_KERNEL); >>> + if (v_block_mapped((unsigned long)_stext) + 1) >> >> That is always true. >> > > Did you boot with 'nobats' kernel parameter ? > > If not, that's normal to be true, it means that memory is mapped with BATs.
bool + 1 is always true.
Andreas.
-- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."
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