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53 Commits

Author SHA1 Message Date
Jan Glauber
d0b0885316 s390/pci: performance statistics and debug infrastructure 
Add support for reading the PCI function measurement block counters
provided by the hypervisor. Add two s390 debug features, one for
critical errors and one for tracing and provide wrappers to log data.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2012-12-14 10:01:17 +01:00
Wei Yongjun
bafff1743f s390/pci: fix potential NULL pointer dereference in dma_free_seg_table() 
The dereference to 'zdev' should be moved below the NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2012-12-03 10:44:11 -05:00
Jan Glauber
828b35f60e s390/pci: DMA support 
Add DMA IOMMU support using 4K page table entries. Implement dma_map_ops.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2012-11-30 17:47:23 +01:00