diff options
Diffstat (limited to 'arch/x86_64/kernel')
| -rw-r--r-- | arch/x86_64/kernel/head.S | 3 | ||||
| -rw-r--r-- | arch/x86_64/kernel/nmi.c | 4 | ||||
| -rw-r--r-- | arch/x86_64/kernel/pci-dma.c | 4 |
3 files changed, 7 insertions, 4 deletions
diff --git a/arch/x86_64/kernel/head.S b/arch/x86_64/kernel/head.S index e89abcdbdde8..b6167fe3330e 100644 --- a/arch/x86_64/kernel/head.S +++ b/arch/x86_64/kernel/head.S @@ -345,8 +345,7 @@ NEXT_PAGE(level2_kernel_pgt) /* 40MB kernel mapping. The kernel code cannot be bigger than that. When you change this change KERNEL_TEXT_SIZE in page.h too. */ /* (2^48-(2*1024*1024*1024)-((2^39)*511)-((2^30)*510)) = 0 */ - PMDS(0x0000000000000000, __PAGE_KERNEL_LARGE_EXEC|_PAGE_GLOBAL, - KERNEL_TEXT_SIZE/PMD_SIZE) + PMDS(0x0000000000000000, __PAGE_KERNEL_LARGE_EXEC|_PAGE_GLOBAL, KERNEL_TEXT_SIZE/PMD_SIZE) /* Module mapping starts here */ .fill (PTRS_PER_PMD - (KERNEL_TEXT_SIZE/PMD_SIZE)),8,0 diff --git a/arch/x86_64/kernel/nmi.c b/arch/x86_64/kernel/nmi.c index cb8ee9d02f86..0ec6d2ddb931 100644 --- a/arch/x86_64/kernel/nmi.c +++ b/arch/x86_64/kernel/nmi.c @@ -85,7 +85,7 @@ int __init check_nmi_watchdog (void) int *counts; int cpu; - if ((nmi_watchdog == NMI_NONE) || (nmi_watchdog == NMI_DEFAULT)) + if ((nmi_watchdog == NMI_NONE) || (nmi_watchdog == NMI_DISABLED)) return 0; if (!atomic_read(&nmi_active)) @@ -442,7 +442,7 @@ int proc_nmi_enabled(struct ctl_table *table, int write, struct file *file, if (!!old_state == !!nmi_watchdog_enabled) return 0; - if (atomic_read(&nmi_active) < 0) { + if (atomic_read(&nmi_active) < 0 || nmi_watchdog == NMI_DISABLED) { printk( KERN_WARNING "NMI watchdog is permanently disabled\n"); return -EIO; } diff --git a/arch/x86_64/kernel/pci-dma.c b/arch/x86_64/kernel/pci-dma.c index 05d745ede561..29711445c818 100644 --- a/arch/x86_64/kernel/pci-dma.c +++ b/arch/x86_64/kernel/pci-dma.c @@ -82,6 +82,10 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, if (dma_mask == 0) dma_mask = DMA_32BIT_MASK; + /* Device not DMA able */ + if (dev->dma_mask == NULL) + return NULL; + /* Don't invoke OOM killer */ gfp |= __GFP_NORETRY; |
