diff options
| -rw-r--r-- | arch/powerpc/Kconfig | 1 | ||||
| -rw-r--r-- | arch/powerpc/mm/book3s32/mmu.c | 6 | ||||
| -rw-r--r-- | arch/powerpc/mm/init_32.c | 5 |
3 files changed, 9 insertions, 3 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index fcb0a9ae9872..752deddc9ed9 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -797,6 +797,7 @@ config DATA_SHIFT range 17 28 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC) && PPC_BOOK3S_32 range 19 23 if (STRICT_KERNEL_RWX || DEBUG_PAGEALLOC) && PPC_8xx default 22 if STRICT_KERNEL_RWX && PPC_BOOK3S_32 + default 18 if DEBUG_PAGEALLOC && PPC_BOOK3S_32 default 23 if STRICT_KERNEL_RWX && PPC_8xx default 23 if DEBUG_PAGEALLOC && PPC_8xx && PIN_TLB_DATA default 19 if DEBUG_PAGEALLOC && PPC_8xx diff --git a/arch/powerpc/mm/book3s32/mmu.c b/arch/powerpc/mm/book3s32/mmu.c index a9b2cbc74797..a6dcc708eee3 100644 --- a/arch/powerpc/mm/book3s32/mmu.c +++ b/arch/powerpc/mm/book3s32/mmu.c @@ -170,6 +170,12 @@ unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top) pr_debug("RAM mapped without BATs\n"); return base; } + if (debug_pagealloc_enabled()) { + if (base >= border) + return base; + if (top >= border) + top = border; + } if (!strict_kernel_rwx_enabled() || base >= border || top <= border) return __mmu_mapin_ram(base, top); diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c index 8977a7c2543d..36c39bd37256 100644 --- a/arch/powerpc/mm/init_32.c +++ b/arch/powerpc/mm/init_32.c @@ -99,10 +99,9 @@ static void __init MMU_setup(void) if (IS_ENABLED(CONFIG_PPC_8xx)) return; - if (debug_pagealloc_enabled()) { - __map_without_bats = 1; + if (debug_pagealloc_enabled()) __map_without_ltlbs = 1; - } + if (strict_kernel_rwx_enabled()) __map_without_ltlbs = 1; } |