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| author |   Yinghai Lu <yinghai@kernel.org> | 2010-02-10 01:20:19 -0800 |
|---|---|---|
| committer |   H. Peter Anvin <hpa@zytor.com> | 2010-02-10 17:47:18 -0800 |
| commit | c252a5bb1f57afb1e336d68085217727ca7b2134 (patch) | |
| tree | 4163dd554e3a1569d18080ec9bfacbcfecb9945a | |
| parent | x86: Make early_node_mem get mem > 4 GB if possible (diff) | |
| download | linux-dev-c252a5bb1f57afb1e336d68085217727ca7b2134.tar.xz linux-dev-c252a5bb1f57afb1e336d68085217727ca7b2134.zip | |
x86: Only call dma32_reserve_bootmem 64bit !CONFIG_NUMA
64bit NUMA already make enough space under 4G with new early_node_mem.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <1265793639-15071-16-git-send-email-yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| -rw-r--r-- | arch/x86/include/asm/pci.h | 2 | ||||
| -rw-r--r-- | arch/x86/include/asm/pci_64.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/pci-dma.c | 13 | ||||
| -rw-r--r-- | arch/x86/kernel/setup.c | 7 |
4 files changed, 12 insertions, 12 deletions
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index ada8c201d513..b4a00dd4eed5 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -124,6 +124,8 @@ extern void pci_iommu_alloc(void); #include "pci_64.h" #endif +void dma32_reserve_bootmem(void); + /* implement the pci_ DMA API in terms of the generic device dma_ one */ #include <asm-generic/pci-dma-compat.h> diff --git a/arch/x86/include/asm/pci_64.h b/arch/x86/include/asm/pci_64.h index ae5e40f67daf..fe15cfb21b9b 100644 --- a/arch/x86/include/asm/pci_64.h +++ b/arch/x86/include/asm/pci_64.h @@ -22,8 +22,6 @@ extern int (*pci_config_read)(int seg, int bus, int dev, int fn, extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int len, u32 value); -extern void dma32_reserve_bootmem(void); - #endif /* __KERNEL__ */ #endif /* _ASM_X86_PCI_64_H */ diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index 75e14e21f61a..1aa966c565f9 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -65,7 +65,7 @@ int dma_set_mask(struct device *dev, u64 mask) } EXPORT_SYMBOL(dma_set_mask); -#ifdef CONFIG_X86_64 +#if defined(CONFIG_X86_64) && !defined(CONFIG_NUMA) static __initdata void *dma32_bootmem_ptr; static unsigned long dma32_bootmem_size __initdata = (128ULL<<20); @@ -116,14 +116,21 @@ static void __init dma32_free_bootmem(void) dma32_bootmem_ptr = NULL; dma32_bootmem_size = 0; } +#else +void __init dma32_reserve_bootmem(void) +{ +} +static void __init dma32_free_bootmem(void) +{ +} + #endif void __init pci_iommu_alloc(void) { -#ifdef CONFIG_X86_64 /* free the range so iommu could get some range less than 4G */ dma32_free_bootmem(); -#endif + if (pci_swiotlb_detect()) goto out; diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 48cadbb1d28b..ea4141b48518 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -969,14 +969,7 @@ void __init setup_arch(char **cmdline_p) initmem_init(0, max_pfn, acpi, k8); early_res_to_bootmem(0, max_low_pfn<<PAGE_SHIFT); -#ifdef CONFIG_X86_64 - /* - * dma32_reserve_bootmem() allocates bootmem which may conflict - * with the crashkernel command line, so do that after - * reserve_crashkernel() - */ dma32_reserve_bootmem(); -#endif reserve_ibft_region(); |