diff options
Diffstat (limited to 'arch/parisc/kernel')
| -rw-r--r-- | arch/parisc/kernel/pci-dma.c | 27 | ||||
| -rw-r--r-- | arch/parisc/kernel/process.c | 10 | ||||
| -rw-r--r-- | arch/parisc/kernel/sys_parisc.c | 3 | ||||
| -rw-r--r-- | arch/parisc/kernel/traps.c | 4 |
4 files changed, 27 insertions, 17 deletions
diff --git a/arch/parisc/kernel/pci-dma.c b/arch/parisc/kernel/pci-dma.c index ff834fd..b9402c9 100644 --- a/arch/parisc/kernel/pci-dma.c +++ b/arch/parisc/kernel/pci-dma.c @@ -478,14 +478,16 @@ static void pa11_dma_unmap_single(struct device *dev, dma_addr_t dma_handle, siz static int pa11_dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction) { int i; + struct scatterlist *sg; BUG_ON(direction == DMA_NONE); - for (i = 0; i < nents; i++, sglist++ ) { - unsigned long vaddr = (unsigned long)sg_virt(sglist); - sg_dma_address(sglist) = (dma_addr_t) virt_to_phys(vaddr); - sg_dma_len(sglist) = sglist->length; - flush_kernel_dcache_range(vaddr, sglist->length); + for_each_sg(sglist, sg, nents, i) { + unsigned long vaddr = (unsigned long)sg_virt(sg); + + sg_dma_address(sg) = (dma_addr_t) virt_to_phys(vaddr); + sg_dma_len(sg) = sg->length; + flush_kernel_dcache_range(vaddr, sg->length); } return nents; } @@ -493,6 +495,7 @@ static int pa11_dma_map_sg(struct device *dev, struct scatterlist *sglist, int n static void pa11_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction) { int i; + struct scatterlist *sg; BUG_ON(direction == DMA_NONE); @@ -501,8 +504,8 @@ static void pa11_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, in /* once we do combining we'll need to use phys_to_virt(sg_dma_address(sglist)) */ - for (i = 0; i < nents; i++, sglist++ ) - flush_kernel_vmap_range(sg_virt(sglist), sglist->length); + for_each_sg(sglist, sg, nents, i) + flush_kernel_vmap_range(sg_virt(sg), sg->length); return; } @@ -523,21 +526,23 @@ static void pa11_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_h static void pa11_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction) { int i; + struct scatterlist *sg; /* once we do combining we'll need to use phys_to_virt(sg_dma_address(sglist)) */ - for (i = 0; i < nents; i++, sglist++ ) - flush_kernel_vmap_range(sg_virt(sglist), sglist->length); + for_each_sg(sglist, sg, nents, i) + flush_kernel_vmap_range(sg_virt(sg), sg->length); } static void pa11_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction) { int i; + struct scatterlist *sg; /* once we do combining we'll need to use phys_to_virt(sg_dma_address(sglist)) */ - for (i = 0; i < nents; i++, sglist++ ) - flush_kernel_vmap_range(sg_virt(sglist), sglist->length); + for_each_sg(sglist, sg, nents, i) + flush_kernel_vmap_range(sg_virt(sg), sg->length); } struct hppa_dma_ops pcxl_dma_ops = { diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c index 8a488c2..809905a 100644 --- a/arch/parisc/kernel/process.c +++ b/arch/parisc/kernel/process.c @@ -181,9 +181,12 @@ int dump_task_fpu (struct task_struct *tsk, elf_fpregset_t *r) return 1; } +/* + * Copy architecture-specific thread state + */ int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long arg, struct task_struct *p) + unsigned long kthread_arg, struct task_struct *p) { struct pt_regs *cregs = &(p->thread.regs); void *stack = task_stack_page(p); @@ -195,11 +198,10 @@ copy_thread(unsigned long clone_flags, unsigned long usp, extern void * const child_return; if (unlikely(p->flags & PF_KTHREAD)) { + /* kernel thread */ memset(cregs, 0, sizeof(struct pt_regs)); if (!usp) /* idle thread */ return 0; - - /* kernel thread */ /* Must exit via ret_from_kernel_thread in order * to call schedule_tail() */ @@ -215,7 +217,7 @@ copy_thread(unsigned long clone_flags, unsigned long usp, #else cregs->gr[26] = usp; #endif - cregs->gr[25] = arg; + cregs->gr[25] = kthread_arg; } else { /* user thread */ /* usp must be word aligned. This also prevents users from diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c index e1ffea2..5aba01a 100644 --- a/arch/parisc/kernel/sys_parisc.c +++ b/arch/parisc/kernel/sys_parisc.c @@ -77,6 +77,9 @@ static unsigned long mmap_upper_limit(void) if (stack_base > STACK_SIZE_MAX) stack_base = STACK_SIZE_MAX; + /* Add space for stack randomization. */ + stack_base += (STACK_RND_MASK << PAGE_SHIFT); + return PAGE_ALIGN(STACK_TOP - stack_base); } diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c index 47ee620..6548fd1 100644 --- a/arch/parisc/kernel/traps.c +++ b/arch/parisc/kernel/traps.c @@ -26,9 +26,9 @@ #include <linux/console.h> #include <linux/bug.h> #include <linux/ratelimit.h> +#include <linux/uaccess.h> #include <asm/assembly.h> -#include <asm/uaccess.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/traps.h> @@ -800,7 +800,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs) * unless pagefault_disable() was called before. */ - if (fault_space == 0 && !in_atomic()) + if (fault_space == 0 && !faulthandler_disabled()) { pdc_chassis_send_status(PDC_CHASSIS_DIRECT_PANIC); parisc_terminate("Kernel Fault", regs, code, fault_address); |