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| author | Aurelien Jarno <aurelien@aurel32.net> | 2017-04-24 00:32:40 +0200 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2017-04-25 13:39:43 +0200 |
| commit | 2cf9953beebd194a432ebd567399807d9b1f6a4d (patch) | |
| tree | 00c3569500a65f6a8cd3cbf5a0332fe6376196ef /target/s390x | |
| parent | 601b9a9008c5a612d76073bb3f178621cff41980 (diff) | |
| download | qemu-2cf9953beebd194a432ebd567399807d9b1f6a4d.tar.gz | |
s390x/misc_helper.c: wrap s390_virtio_hypercall in BQL
s390_virtio_hypercall can trigger IO events and interrupts, most notably
when using virtio-ccw devices.
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Fixes: 278f5e98c647 ("s390x/misc_helper.c: wrap IO instructions in BQL")
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target/s390x')
| -rw-r--r-- | target/s390x/misc_helper.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/target/s390x/misc_helper.c b/target/s390x/misc_helper.c index 83d38944d7..eca82441d0 100644 --- a/target/s390x/misc_helper.c +++ b/target/s390x/misc_helper.c @@ -288,7 +288,9 @@ void HELPER(diag)(CPUS390XState *env, uint32_t r1, uint32_t r3, uint32_t num) switch (num) { case 0x500: /* KVM hypercall */ + qemu_mutex_lock_iothread(); r = s390_virtio_hypercall(env); + qemu_mutex_unlock_iothread(); break; case 0x44: /* yield */ |