diff options
| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-02-21 10:37:53 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-02-22 00:10:16 +1100 |
| commit | 40058337f23f79212f92ed5ef066e90a032905b1 (patch) | |
| tree | 6a0dac2960e645805cc00134cbbabfff64664c9a /arch/powerpc/mm | |
| parent | 36da5ff0bea2dc67298150ead8d8471575c54c7d (diff) | |
powerpc: simplify BDI switch
There is no reason to re-read each time the pointer at
location 0xf0 as it is fixed and known.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/8xx_mmu.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/powerpc/mm/8xx_mmu.c b/arch/powerpc/mm/8xx_mmu.c index bfa503cff351..f12ec85e965c 100644 --- a/arch/powerpc/mm/8xx_mmu.c +++ b/arch/powerpc/mm/8xx_mmu.c @@ -162,14 +162,11 @@ void set_context(unsigned long id, pgd_t *pgd) { s16 offset = (s16)(__pa(swapper_pg_dir)); -#ifdef CONFIG_BDI_SWITCH - pgd_t **ptr = *(pgd_t ***)(KERNELBASE + 0xf0); - /* Context switch the PTE pointer for the Abatron BDI2000. * The PGDIR is passed as second argument. */ - *(ptr + 1) = pgd; -#endif + if (IS_ENABLED(CONFIG_BDI_SWITCH)) + abatron_pteptrs[1] = pgd; /* Register M_TWB will contain base address of level 1 table minus the * lower part of the kernel PGDIR base address, so that all accesses to |