diff options
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/Kconfig | 3 | ||||
| -rw-r--r-- | arch/arm/mm/cache-v7.S | 6 | ||||
| -rw-r--r-- | arch/arm/mm/ioremap.c | 3 | ||||
| -rw-r--r-- | arch/arm/mm/proc-v7.S | 4 |
4 files changed, 10 insertions, 6 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 1a3ca2488164..7edef9121632 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -631,7 +631,8 @@ comment "Processor Features" config ARM_LPAE bool "Support for the Large Physical Address Extension" - depends on MMU && CPU_V7 + depends on MMU && CPU_32v7 && !CPU_32v6 && !CPU_32v5 && \ + !CPU_32v4 && !CPU_32v3 help Say Y if you have an ARMv7 processor supporting the LPAE page table format and you would like to access memory beyond the diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S index 07c4bc8ea0a4..a655d3da386d 100644 --- a/arch/arm/mm/cache-v7.S +++ b/arch/arm/mm/cache-v7.S @@ -54,9 +54,15 @@ loop1: and r1, r1, #7 @ mask of the bits for current cache only cmp r1, #2 @ see what cache we have at this level blt skip @ skip if no cache, or just i-cache +#ifdef CONFIG_PREEMPT + save_and_disable_irqs_notrace r9 @ make cssr&csidr read atomic +#endif mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr isb @ isb to sych the new cssr&csidr mrc p15, 1, r1, c0, c0, 0 @ read the new csidr +#ifdef CONFIG_PREEMPT + restore_irqs_notrace r9 +#endif and r2, r1, #7 @ extract the length of the cache lines add r2, r2, #4 @ add 4 (line length offset) ldr r4, =0x3ff diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c index ba159370fa5f..80632e8d7538 100644 --- a/arch/arm/mm/ioremap.c +++ b/arch/arm/mm/ioremap.c @@ -225,8 +225,7 @@ void __iomem * __arm_ioremap_pfn_caller(unsigned long pfn, if ((area->flags & VM_ARM_MTYPE_MASK) != VM_ARM_MTYPE(mtype)) continue; if (__phys_to_pfn(area->phys_addr) > pfn || - __pfn_to_phys(pfn) + offset + size-1 > - area->phys_addr + area->size-1) + __pfn_to_phys(pfn) + size-1 > area->phys_addr + area->size-1) continue; /* we can drop the lock here as we know *area is static */ read_unlock(&vmlist_lock); diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index 0404ccbb8aa3..f1c8486f7501 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -230,9 +230,7 @@ __v7_setup: mcreq p15, 0, r10, c15, c0, 1 @ write diagnostic register #endif #ifdef CONFIG_ARM_ERRATA_743622 - teq r6, #0x20 @ present in r2p0 - teqne r6, #0x21 @ present in r2p1 - teqne r6, #0x22 @ present in r2p2 + teq r5, #0x00200000 @ only present in r2p* mrceq p15, 0, r10, c15, c0, 1 @ read diagnostic register orreq r10, r10, #1 << 6 @ set bit #6 mcreq p15, 0, r10, c15, c0, 1 @ write diagnostic register |