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x86: Only call dma32_reserve_bootmem 64bit !CONFIG_NUMA

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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>
This commit is contained in:
Yinghai Lu 2010-02-10 01:20:19 -08:00 committed by H. Peter Anvin
parent cef625eef8
commit c252a5bb1f
4 changed files with 12 additions and 12 deletions
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2
arch/x86/include/asm/pci.h
View file

@ -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>

2
arch/x86/include/asm/pci_64.h
View file

@ -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 */

13
arch/x86/kernel/pci-dma.c
View file

@ -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;

7
arch/x86/kernel/setup.c
View file

@ -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();