search for: map_pages

On 2020/2/4 ??4:21, Zhu Lingshan wrote: >> +static const struct dma_map_ops vdpasim_dma_ops = { >> +??? .map_page = vdpasim_map_page, >> +??? .unmap_page = vdpasim_unmap_page, >> +??? .alloc = vdpasim_alloc_coherent, >> +??? .free = vdpasim_free_coherent, >> +}; >> + > > Hey Jason, > > IMHO, it would be nice if dma_ops of the parent device

On 2020/2/4 ??4:21, Zhu Lingshan wrote: >> +static const struct dma_map_ops vdpasim_dma_ops = { >> +??? .map_page = vdpasim_map_page, >> +??? .unmap_page = vdpasim_unmap_page, >> +??? .alloc = vdpasim_alloc_coherent, >> +??? .free = vdpasim_free_coherent, >> +}; >> + > > Hey Jason, > > IMHO, it would be nice if dma_ops of the parent device

From: Mircea C?rjaliu <mcirjaliu at bitdefender.com> The following two new mm exports are introduced: * mm_remote_map(struct mm_struct *req_mm, unsigned long req_hva, unsigned long map_hva) * mm_remote_unmap(unsigned long map_hva) * mm_remote_reset(void) * rmap_walk_remote(struct page *page, struct rmap_walk_control *rwc) This patch

...= dma_common_free_pages, }; /** diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c index 4a37d8f4de9d9d..9291023e9469c2 100644 --- a/arch/s390/pci/pci_dma.c +++ b/arch/s390/pci/pci_dma.c @@ -668,6 +668,8 @@ const struct dma_map_ops s390_pci_dma_ops = { .unmap_page = s390_dma_unmap_pages, .mmap = dma_common_mmap, .get_sgtable = dma_common_get_sgtable, + .alloc_pages = dma_common_alloc_pages, + .free_pages = dma_common_free_pages, /* dma_supported is unconditionally true without a callback */ }; EXPORT_SYMBOL_GPL(s390_pci_dma_ops); diff --git a/arch/x86/kernel/amd_gart_64.c...

Some of the alpha pci noop dma ops are identical to the common ones. Use them. Signed-off-by: Christian Borntraeger <borntraeger at de.ibm.com> --- arch/alpha/kernel/pci-noop.c | 46 ++++---------------------------------------- 1 file changed, 4 insertions(+), 42 deletions(-) diff --git a/arch/alpha/kernel/pci-noop.c b/arch/alpha/kernel/pci-noop.c index 2b1f4a1..8e735b5e 100644 ---

Some of the alpha pci noop dma ops are identical to the common ones. Use them. Signed-off-by: Christian Borntraeger <borntraeger at de.ibm.com> Reviewed-by: Joerg Roedel <jroedel at suse.de> --- arch/alpha/kernel/pci-noop.c | 46 ++++---------------------------------------- 1 file changed, 4 insertions(+), 42 deletions(-) diff --git a/arch/alpha/kernel/pci-noop.c

> +/* > + * Virtio direct mapping DMA API operations structure > + * > + * This defines DMA API structure for all virtio devices which would not > + * either bring in their own DMA OPS from architecture or they would not > + * like to use architecture specific IOMMU based DMA OPS because QEMU > + * expects GPA instead of an IOVA in absence of VIRTIO_F_IOMMU_PLATFORM. > + */

...uct device *dev, enum iommu_cap cap) > switch (cap) { > case IOMMU_CAP_CACHE_COHERENCY: > return true; > + case IOMMU_CAP_DEFERRED_FLUSH: > + return true; > default: > return false; > } > @@ -1069,6 +1080,7 @@ static struct iommu_ops viommu_ops = { > .map_pages = viommu_map_pages, > .unmap_pages = viommu_unmap_pages, > .iova_to_phys = viommu_iova_to_phys, > + .flush_iotlb_all = viommu_flush_iotlb_all, > .iotlb_sync = viommu_iotlb_sync, > .iotlb_sync_map = viommu_iotlb_sync_map, > .free = viommu_domain_free, > &...

Hi all, this patch series enables xen-swiotlb on arm and arm64. It has been heavily reworked compared to the previous versions in order to achieve better performances and to address review comments. We are not using dma_mark_clean to ensure coherency anymore. We call the platform implementation of map_page and unmap_page. We assume that dom0 has been mapped 1:1 (physical address == machine

...= dma_common_free_pages, }; /** diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c index 64b1399a73f04d..44004f790bdc44 100644 --- a/arch/s390/pci/pci_dma.c +++ b/arch/s390/pci/pci_dma.c @@ -670,6 +670,8 @@ const struct dma_map_ops s390_pci_dma_ops = { .unmap_page = s390_dma_unmap_pages, .mmap = dma_common_mmap, .get_sgtable = dma_common_get_sgtable, + .alloc_pages = dma_common_alloc_pages, + .free_pages = dma_common_free_pages, /* dma_supported is unconditionally true without a callback */ }; EXPORT_SYMBOL_GPL(s390_pci_dma_ops); diff --git a/arch/x86/kernel/amd_gart_64.c...

Andy, to make it obvious which version is the latest, here is a branch The following changes since commit 6a13feb9c82803e2b815eca72fa7a9f5561d7861: Linux 4.3 (2015-11-01 16:05:25 -0800) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux.git dma for you to fetch changes up to fc7f9754db6ce0c12281da4055281f731d36bdee: s390/dma: Allow

Andy, to make it obvious which version is the latest, here is a branch The following changes since commit 6a13feb9c82803e2b815eca72fa7a9f5561d7861: Linux 4.3 (2015-11-01 16:05:25 -0800) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux.git dma for you to fetch changes up to fc7f9754db6ce0c12281da4055281f731d36bdee: s390/dma: Allow

Andy, this is the next and hopefully last version. Seems to work fine when replacing the previous patches in your tree. I have some reviews/acks for patch 2 and 3. patch 1 still needs one ack. Can you replace the patches in your tree and carry them along with your changes? old introduction: ----- There are some attempts to unify the dma ops (Christoph) as well as some attempts to make virtio use

Andy, this is the next and hopefully last version. Seems to work fine when replacing the previous patches in your tree. I have some reviews/acks for patch 2 and 3. patch 1 still needs one ack. Can you replace the patches in your tree and carry them along with your changes? old introduction: ----- There are some attempts to unify the dma ops (Christoph) as well as some attempts to make virtio use

Hi, I''ve added some preliminary support for VT-d for paravirtualized guests. This must be enabled using an ''iommu_pv'' boot parameter (disabled by default). I''ve added some python bindigs to allow xend to assign PCI devices to IOMMU for PV guests. For HVM guests this is handled in ioemu. Not sure if it makes sense to handle both cases in one place. The

here is the 2nd version of providing an DMA API for s390. There are some attempts to unify the dma ops (Christoph) as well as some attempts to make virtio use the dma API (Andy). At kernel summit we concluded that we want to use the same code on all platforms, whereever possible, so having a dummy dma_op might be the easiest solution to keep virtio-ccw as similar as possible to

here is the 2nd version of providing an DMA API for s390. There are some attempts to unify the dma ops (Christoph) as well as some attempts to make virtio use the dma API (Andy). At kernel summit we concluded that we want to use the same code on all platforms, whereever possible, so having a dummy dma_op might be the easiest solution to keep virtio-ccw as similar as possible to

...urn true; > > > > + case IOMMU_CAP_DEFERRED_FLUSH: > > > > + return true; > > > > default: > > > > return false; > > > > } > > > > @@ -1069,6 +1080,7 @@ static struct iommu_ops viommu_ops = { > > > > .map_pages = viommu_map_pages, > > > > .unmap_pages = viommu_unmap_pages, > > > > .iova_to_phys = viommu_iova_to_phys, > > > > + .flush_iotlb_all = viommu_flush_iotlb_all, > > > > .iotlb_sync = viommu_iotlb_sync, > > > > .iotlb_s...

...urn true; > > > > + case IOMMU_CAP_DEFERRED_FLUSH: > > > > + return true; > > > > default: > > > > return false; > > > > } > > > > @@ -1069,6 +1080,7 @@ static struct iommu_ops viommu_ops = { > > > > .map_pages = viommu_map_pages, > > > > .unmap_pages = viommu_unmap_pages, > > > > .iova_to_phys = viommu_iova_to_phys, > > > > + .flush_iotlb_all = viommu_flush_iotlb_all, > > > > .iotlb_sync = viommu_iotlb_sync, > > > > .iotlb_s...

...lock_irqrestore+0x47/0x5c [ 315.147195] [<ffffffff812275b1>] ? isolate_freepages_block+0x2f9/0x5a6 [ 315.147213] [<ffffffff8127f15c>] ? kasan_poison_shadow+0x2f/0x31 [ 315.147230] [<ffffffff8127f66a>] ? kasan_alloc_pages+0x39/0x3b [ 315.147246] [<ffffffff812267e6>] ? map_pages+0x1f3/0x3ad [ 315.147262] [<ffffffff812265f3>] ? update_pageblock_skip+0x18d/0x18d [ 315.147280] [<ffffffff81115972>] ? up_read+0x1a/0x30 [ 315.147296] [<ffffffff8111ec7e>] ? debug_check_no_locks_freed+0x150/0x22b [ 315.147315] [<ffffffff812842d1>] move_to_new_page+0...