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authorJeremy Fitzhardinge <jeremy@goop.org>2008-12-16 12:17:36 -0800
committerIngo Molnar <mingo@elte.hu>2008-12-17 18:58:19 +0100
commitcfb80c9eae8c7ed8f2ee81090062d15ead51cbe8 (patch)
tree8343c02e8599f0e038cc9c0b303854193fb38e37 /arch/x86/kernel/pci-dma.c
parent8ce7996009bab7b2d23e7af7ad831fed7eb6faa1 (diff)
x86: unify pci iommu setup and allow swiotlb to compile for 32 bit
swiotlb on 32 bit will be used by Xen domain 0 support. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/pci-dma.c')
-rw-r--r--arch/x86/kernel/pci-dma.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index e150ad4f0ccc..00e07447a5bd 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -105,11 +105,15 @@ static void __init dma32_free_bootmem(void)
dma32_bootmem_ptr = NULL;
dma32_bootmem_size = 0;
}
+#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
+
/*
* The order of these functions is important for
* fall-back/fail-over reasons
@@ -125,8 +129,6 @@ void __init pci_iommu_alloc(void)
pci_swiotlb_init();
}
-#endif
-
void *dma_generic_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_addr, gfp_t flag)
{