Searched hist:bb99332a2b558e1f28b4c5011f9ea3b46f1c8806 (Results 1 – 3 of 3) sorted by relevance
| /openbmc/linux/arch/s390/include/asm/ |
| H A D | cio.h | diff bb99332a2b558e1f28b4c5011f9ea3b46f1c8806 Tue Apr 02 11:47:29 CDT 2019 Halil Pasic <pasic@linux.ibm.com> s390/cio: introduce DMA pools to cio
To support protected virtualization cio will need to make sure the
memory used for communication with the hypervisor is DMA memory.
Let us introduce one global pool for cio.
Our DMA pools are implemented as a gen_pool backed with DMA pages. The
idea is to avoid each allocation effectively wasting a page, as we
typically allocate much less than PAGE_SIZE.
Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Sebastian Ott <sebott@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Michael Mueller <mimu@linux.ibm.com>
Tested-by: Michael Mueller <mimu@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
|
| /openbmc/linux/drivers/s390/cio/ |
| H A D | css.c | diff bb99332a2b558e1f28b4c5011f9ea3b46f1c8806 Tue Apr 02 11:47:29 CDT 2019 Halil Pasic <pasic@linux.ibm.com> s390/cio: introduce DMA pools to cio
To support protected virtualization cio will need to make sure the
memory used for communication with the hypervisor is DMA memory.
Let us introduce one global pool for cio.
Our DMA pools are implemented as a gen_pool backed with DMA pages. The
idea is to avoid each allocation effectively wasting a page, as we
typically allocate much less than PAGE_SIZE.
Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Sebastian Ott <sebott@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Michael Mueller <mimu@linux.ibm.com>
Tested-by: Michael Mueller <mimu@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
|
| /openbmc/linux/arch/s390/ |
| H A D | Kconfig | diff bb99332a2b558e1f28b4c5011f9ea3b46f1c8806 Tue Apr 02 11:47:29 CDT 2019 Halil Pasic <pasic@linux.ibm.com> s390/cio: introduce DMA pools to cio
To support protected virtualization cio will need to make sure the
memory used for communication with the hypervisor is DMA memory.
Let us introduce one global pool for cio.
Our DMA pools are implemented as a gen_pool backed with DMA pages. The
idea is to avoid each allocation effectively wasting a page, as we
typically allocate much less than PAGE_SIZE.
Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Sebastian Ott <sebott@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Michael Mueller <mimu@linux.ibm.com>
Tested-by: Michael Mueller <mimu@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
|