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| author | Jane Malalane <jane.malalane@citrix.com> | 2022-07-29 10:04:16 +0300 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2022-08-12 12:28:21 +0300 |
| commit | b1c3497e604ddccea5af4071831ed0e4680fb35e (patch) | |
| tree | 108b8bd765f1e0496592013bb988ac329ca19de9 /include/xen/hvm.h | |
| parent | 251e90e7e346a23742b90e2c4db19d322e071d99 (diff) | |
| download | linux-b1c3497e604ddccea5af4071831ed0e4680fb35e.tar.xz | |
x86/xen: Add support for HVMOP_set_evtchn_upcall_vector
Implement support for the HVMOP_set_evtchn_upcall_vector hypercall in
order to set the per-vCPU event channel vector callback on Linux and
use it in preference of HVM_PARAM_CALLBACK_IRQ.
If the per-VCPU vector setup is successful on BSP, use this method
for the APs. If not, fallback to the global vector-type callback.
Also register callback_irq at per-vCPU event channel setup to trick
toolstack to think the domain is enlightened.
Suggested-by: "Roger Pau Monné" <roger.pau@citrix.com>
Signed-off-by: Jane Malalane <jane.malalane@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20220729070416.23306-1-jane.malalane@citrix.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'include/xen/hvm.h')
| -rw-r--r-- | include/xen/hvm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/xen/hvm.h b/include/xen/hvm.h index b7fd7fc9ad41..8da7a6747058 100644 --- a/include/xen/hvm.h +++ b/include/xen/hvm.h @@ -60,4 +60,6 @@ static inline int hvm_get_parameter(int idx, uint64_t *value) void xen_setup_callback_vector(void); +int xen_set_upcall_vector(unsigned int cpu); + #endif /* XEN_HVM_H__ */ |