diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/xen/swiotlb-xen.h | 6 | ||||
| -rw-r--r-- | arch/x86/kernel/pci-dma.c | 29 |
2 files changed, 7 insertions, 28 deletions
diff --git a/arch/x86/include/asm/xen/swiotlb-xen.h b/arch/x86/include/asm/xen/swiotlb-xen.h index 77a2d19cc990..abde0f44df57 100644 --- a/arch/x86/include/asm/xen/swiotlb-xen.h +++ b/arch/x86/include/asm/xen/swiotlb-xen.h @@ -2,12 +2,6 @@ #ifndef _ASM_X86_SWIOTLB_XEN_H #define _ASM_X86_SWIOTLB_XEN_H -#ifdef CONFIG_SWIOTLB_XEN -extern int pci_xen_swiotlb_init_late(void); -#else -static inline int pci_xen_swiotlb_init_late(void) { return -ENXIO; } -#endif - int xen_swiotlb_fixup(void *buf, unsigned long nslabs); int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order, unsigned int address_bits, diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index de6be0a3965e..f323d83e40a7 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -72,9 +72,15 @@ static inline void __init pci_swiotlb_detect(void) #endif /* CONFIG_SWIOTLB */ #ifdef CONFIG_SWIOTLB_XEN +static bool xen_swiotlb_enabled(void) +{ + return xen_initial_domain() || x86_swiotlb_enable || + (IS_ENABLED(CONFIG_XEN_PCIDEV_FRONTEND) && xen_pv_pci_possible); +} + static void __init pci_xen_swiotlb_init(void) { - if (!xen_initial_domain() && !x86_swiotlb_enable) + if (!xen_swiotlb_enabled()) return; x86_swiotlb_enable = true; x86_swiotlb_flags |= SWIOTLB_ANY; @@ -83,27 +89,6 @@ static void __init pci_xen_swiotlb_init(void) if (IS_ENABLED(CONFIG_PCI)) pci_request_acs(); } - -int pci_xen_swiotlb_init_late(void) -{ - if (dma_ops == &xen_swiotlb_dma_ops) - return 0; - - /* we can work with the default swiotlb */ - if (!io_tlb_default_mem.nslabs) { - int rc = swiotlb_init_late(swiotlb_size_or_default(), - GFP_KERNEL, xen_swiotlb_fixup); - if (rc < 0) - return rc; - } - - /* XXX: this switches the dma ops under live devices! */ - dma_ops = &xen_swiotlb_dma_ops; - if (IS_ENABLED(CONFIG_PCI)) - pci_request_acs(); - return 0; -} -EXPORT_SYMBOL_GPL(pci_xen_swiotlb_init_late); #else static inline void __init pci_xen_swiotlb_init(void) { |