extern struct iommu_table_entry __iommu_table[], __iommu_table_end[];
@@ -146,6 +148,7 @@ void dma_generic_free_coherent(struct device *dev,
size_t size, void *vaddr,
*/
static __init int iommu_setup(char *p)
{
+char *end;
iommu_merge = 1;
if (!p)
@@ -192,6
Don't store the SIRTP request bit in the register state. It will
otherwise become sticky and could request an Interrupt Remap Table
Pointer update on each command register write.
Found while starting to emulate IR in QEMU, not by observing problems on
real hardware.
Signed-off-by: Jan Kiszka
On 8/11/2014 12:43 AM, Alex Williamson wrote:
On Mon, 2014-08-11 at 10:54 +0800, Yijing Wang wrote:
We found some strange devices in HP C7000 and Huawei Server. These devices
can not be enumerated by OS, but they still did DMA read/write without OS
management. Because iommu will not create
Patch for adding map_sg/unmap_sg to the generic IOMMU API.
v4 - v5:
* Simplified logic in map_sg on error
* Moved fallback to separate function for both map an unmap and pointed
all drivers to these fallbacks.
v3 - v4:
* Removed BUG_ON in both map_sg and unmap_sg
* Removed PAGE_ALIGN of length
On Mon, Aug 11, 2014 at 03:45:50PM -0700, Olav Haugan wrote:
Mapping and unmapping are more often than not in the critical path.
map_sg and unmap_sg allows IOMMU driver implementations to optimize
the process of mapping and unmapping buffers into the IOMMU page tables.
Instead of mapping a
Hi Olav,
Olav Haugan ohau...@codeaurora.org writes:
@@ -93,6 +94,10 @@ enum iommu_attr {
* @detach_dev: detach device from an iommu domain
* @map: map a physically contiguous memory region to an iommu domain
* @unmap: unmap a physically contiguous memory region from an iommu domain
+
On 2014/8/12 9:37, Yijing Wang wrote:
On 2014/8/11 22:59, Linda Knippers wrote:
On 8/11/2014 12:43 AM, Alex Williamson wrote:
On Mon, 2014-08-11 at 10:54 +0800, Yijing Wang wrote:
We found some strange devices in HP C7000 and Huawei Server. These devices
can not be enumerated by OS, but
On 2014/8/12 9:37, Yijing Wang wrote:
On 2014/8/11 22:59, Linda Knippers wrote:
On 8/11/2014 12:43 AM, Alex Williamson wrote:
On Mon, 2014-08-11 at 10:54 +0800, Yijing Wang wrote:
We found some strange devices in HP C7000 and Huawei Server. These devices
can not be enumerated by OS, but they
On 2014/8/12 11:18, Jiang Liu wrote:
On 2014/8/12 9:37, Yijing Wang wrote:
On 2014/8/11 22:59, Linda Knippers wrote:
On 8/11/2014 12:43 AM, Alex Williamson wrote:
On Mon, 2014-08-11 at 10:54 +0800, Yijing Wang wrote:
We found some strange devices in HP C7000 and Huawei Server. These devices
