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| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2014-05-27 15:36:30 +1000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-06-16 13:24:39 +0200 |
| commit | da95324ebe462b14a3507af02eb4a689c8a1619f (patch) | |
| tree | 246278f453437fa1e744a1c02869710006554c74 /target-ppc/mfrom_table.c | |
| parent | a1d59c0ffadf17d546f53f4bda06e8adcf616ede (diff) | |
| download | hqemu-da95324ebe462b14a3507af02eb4a689c8a1619f.zip hqemu-da95324ebe462b14a3507af02eb4a689c8a1619f.tar.gz | |
spapr_iommu: Enable multiple TCE requests
Currently only single TCE entry per request is supported (H_PUT_TCE).
However PAPR+ specification allows multiple entry requests such as
H_PUT_TCE_INDIRECT and H_STUFF_TCE. Having less transitions to the host
kernel via ioctls, support of these calls can accelerate IOMMU operations.
This implements H_STUFF_TCE and H_PUT_TCE_INDIRECT.
This advertises "multi-tce" capability to the guest if the host kernel
supports it (KVM_CAP_SPAPR_MULTITCE) or guest is running in TCG mode.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc/mfrom_table.c')
0 files changed, 0 insertions, 0 deletions
