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| author | Halil Pasic <pasic@linux.ibm.com> | 2018-09-13 18:57:16 +0200 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2019-06-15 12:25:05 +0200 |
| commit | b50623e5db802e41736f3305cb54c03bc7f0e30a (patch) | |
| tree | 338d7c361dc8b6c3ec9c7d2d9e4fd421fab755dd /drivers/s390/cio/css.c | |
| parent | 37db8985b2116c89a3cbaf87083a02f83afaba5b (diff) | |
| download | linux-stable-b50623e5db802e41736f3305cb54c03bc7f0e30a.tar.gz linux-stable-b50623e5db802e41736f3305cb54c03bc7f0e30a.tar.bz2 linux-stable-b50623e5db802e41736f3305cb54c03bc7f0e30a.zip | |
s390/airq: use DMA memory for adapter interrupts
Protected virtualization guests have to use shared pages for airq
notifier bit vectors, because the hypervisor needs to write these bits.
Let us make sure we allocate DMA memory for the notifier bit vectors by
replacing the kmem_cache with a dma_cache and kalloc() with
cio_dma_zalloc().
Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Sebastian Ott <sebott@linux.ibm.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>
Diffstat (limited to 'drivers/s390/cio/css.c')
| -rw-r--r-- | drivers/s390/cio/css.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 7b1a440a1f8e..7159933d9d3e 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -1184,6 +1184,7 @@ static int __init css_bus_init(void) ret = cio_dma_pool_init(); if (ret) goto out_unregister_pmn; + airq_init(); css_init_done = 1; /* Enable default isc for I/O subchannels. */ |