search for: xen_virt_to_bus

...eturn dma; -} - -static inline phys_addr_t xen_bus_to_phys(dma_addr_t baddr) -{ - unsigned long pfn = bfn_to_pfn(PFN_DOWN(baddr)); - dma_addr_t dma = (dma_addr_t)pfn << PAGE_SHIFT; - phys_addr_t paddr = dma; - - paddr |= baddr & ~PAGE_MASK; - - return paddr; -} - -static inline dma_addr_t xen_virt_to_bus(void *address) -{ - return xen_phys_to_bus(virt_to_phys(address)); -} - static int check_pages_physically_contiguous(unsigned long pfn, unsigned int offset, size_t length) diff --git a/include/xen/swiotlb-xen.h b/include/xen/swiotlb-xen.h index 8b2eb93..d55aee8 100644 --- a/i...

...s series adds few obvious checks to perform address translations in a couple of key places, without changing non-Xen code paths. You are welcome to suggest improvements or alternative implementations. Thanks, Stefano Stefano Stabellini (3): xen: export xen_phys_to_bus, xen_bus_to_phys and xen_virt_to_bus xen/virtio: allocate a contiguous region to be use as virtio queue xen/virtio_ring: introduce cpu_to_virtio_addr and virtio_addr_to_cpu drivers/virtio/virtio_pci_legacy.c | 19 +++++++++++++++---- drivers/virtio/virtio_ring.c | 9 +++++---- drivers/xen/swiotlb-xen.c...

...s series adds few obvious checks to perform address translations in a couple of key places, without changing non-Xen code paths. You are welcome to suggest improvements or alternative implementations. Thanks, Stefano Stefano Stabellini (3): xen: export xen_phys_to_bus, xen_bus_to_phys and xen_virt_to_bus xen/virtio: allocate a contiguous region to be use as virtio queue xen/virtio_ring: introduce cpu_to_virtio_addr and virtio_addr_to_cpu drivers/virtio/virtio_pci_legacy.c | 19 +++++++++++++++---- drivers/virtio/virtio_ring.c | 9 +++++---- drivers/xen/swiotlb-xen.c...

...TLB buffer"); mips_dma_map_ops = &octeon_linear_dma_map_ops.dma_map_ops; } diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index af47e75..1d94316 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -231,7 +231,9 @@ retry: } start_dma_addr = xen_virt_to_bus(xen_io_tlb_start); if (early) { - swiotlb_init_with_tbl(xen_io_tlb_start, xen_io_tlb_nslabs, verbose); + if (swiotlb_init_with_tbl(xen_io_tlb_start, xen_io_tlb_nslabs, + verbose)) + panic("Cannot allocate SWIOTLB buffer"); rc = 0; } else rc = swiotlb_late_init_with_tbl(xe...

...TLB buffer"); mips_dma_map_ops = &octeon_linear_dma_map_ops.dma_map_ops; } diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index af47e75..1d94316 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -231,7 +231,9 @@ retry: } start_dma_addr = xen_virt_to_bus(xen_io_tlb_start); if (early) { - swiotlb_init_with_tbl(xen_io_tlb_start, xen_io_tlb_nslabs, verbose); + if (swiotlb_init_with_tbl(xen_io_tlb_start, xen_io_tlb_nslabs, + verbose)) + panic("Cannot allocate SWIOTLB buffer"); rc = 0; } else rc = swiotlb_late_init_with_tbl(xe...

Hey Jeremy, Please pull from devel/pat (based off your xen/dom0/core tree) which has one patch: Konrad Rzeszutek Wilk (1): xen/pat: make pte_flags(x) a pvops function. which is neccessary for the drivers/gpu/drm/radeon driver to work properly with AGP based cards (which look to be the only ones that try to set WC on pages). Also please pull from devel/kms.fixes-05 (based off your

...ge, xen_dma_sync_single_for_cpu/device swiotlb: print a warning when the swiotlb is full arm,arm64: do not always merge biovec if we are running on Xen grant-table: call set_phys_to_machine after mapping grant refs swiotlb-xen: static inline xen_phys_to_bus, xen_bus_to_phys, xen_virt_to_bus and range_straddles_page_boundary swiotlb-xen: fix error code returned by xen_swiotlb_map_sg_attrs arm: make SWIOTLB available pci-swiotlb-xen: call pci_request_acs only ifdef CONFIG_PCI swiotlb-xen: missing include dma-direction.h arm,arm64/include/asm/io.h: define st...

...swiotlb is full arm,arm64: do not always merge biovec if we are running on Xen grant-table: call set_phys_to_machine after mapping grant refs swiotlb-xen: no need to do execute two bus_to_phys translations in a row swiotlb-xen: static inline xen_phys_to_bus, xen_bus_to_phys, xen_virt_to_bus and range_straddles_page_boundary arch/arm/Kconfig | 7 + arch/arm/include/asm/dma-mapping.h | 50 +++++++- arch/arm/include/asm/io.h | 8 + arch/arm/include/asm/xen/hypervisor.h | 2 + arch/arm/include/asm/xen/page-coherent.h |...

This patch is a significant performance improvement for the m2p_override: about 6% using the gntdev device. Each m2p_add/remove_override call issues a MULTI_grant_table_op and a __flush_tlb_single if kmap_op != NULL. Batching all the calls together is a great performance benefit because it means issuing one hypercall total rather than two hypercall per page. If paravirt_lazy_mode is set