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[Stable-8.1.3 35/55] hw/xen: take iothread mutex in xen_evtchn_reset_op(
From: |
Michael Tokarev |
Subject: |
[Stable-8.1.3 35/55] hw/xen: take iothread mutex in xen_evtchn_reset_op() |
Date: |
Thu, 9 Nov 2023 16:42:39 +0300 |
From: David Woodhouse <dwmw@amazon.co.uk>
The xen_evtchn_soft_reset() function requires the iothread mutex, but is
also called for the EVTCHNOP_reset hypercall. Ensure the mutex is taken
in that case.
Cc: qemu-stable@nongnu.org
Fixes: a15b10978fe6 ("hw/xen: Implement EVTCHNOP_reset")
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
(cherry picked from commit debc995e883b05c2fd02fb797a61ab1328e5bae2)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/hw/i386/kvm/xen_evtchn.c b/hw/i386/kvm/xen_evtchn.c
index 3d6f4b4a0a..b2b4be9983 100644
--- a/hw/i386/kvm/xen_evtchn.c
+++ b/hw/i386/kvm/xen_evtchn.c
@@ -1135,6 +1135,7 @@ int xen_evtchn_reset_op(struct evtchn_reset *reset)
return -ESRCH;
}
+ QEMU_IOTHREAD_LOCK_GUARD();
return xen_evtchn_soft_reset();
}
--
2.39.2
- [Stable-8.1.3 18/55] target/sparc: Clear may_lookup for npc == DYNAMIC_PC, (continued)
- [Stable-8.1.3 18/55] target/sparc: Clear may_lookup for npc == DYNAMIC_PC, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 25/55] target/arm: Fix SVE STR increment, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 22/55] tests/tcg: Add -fno-stack-protector, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 23/55] qemu-img: rebase: stop when reaching EOF of old backing file, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 24/55] qemu-iotests: 024: add rebasing test case for overlay_size > backing_size, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 26/55] target/arm: Correctly propagate stage 1 BTI guarded bit in a two-stage walk, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 28/55] vfio/pci: Fix buffer overrun when writing the VF token, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 27/55] util/uuid: Add UUID_STR_LEN definition, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 29/55] util/uuid: Remove UUID_FMT_LEN, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 30/55] i386/xen: Don't advertise XENFEAT_supervisor_mode_kernel, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 35/55] hw/xen: take iothread mutex in xen_evtchn_reset_op(),
Michael Tokarev <=
- [Stable-8.1.3 32/55] hw/xen: select kernel mode for per-vCPU event channel upcall vector, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 31/55] i386/xen: fix per-vCPU upcall vector for Xen emulation, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 33/55] hw/xen: don't clear map_track[] in xen_gnttab_reset(), Michael Tokarev, 2023/11/09
- [Stable-8.1.3 34/55] hw/xen: fix XenStore watch delivery to guest, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 39/55] target/arm: Fix A64 LDRA immediate decode, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 36/55] hw/xen: use correct default protocol for xen-block on x86, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 37/55] virtio-gpu: block migration of VMs with blob=true, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 38/55] block/nvme: nvme_process_completion() fix bound for cid, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 41/55] block/file-posix: fix update_zones_wp() caller, Michael Tokarev, 2023/11/09
- [Stable-8.1.3 45/55] ui/gtk-egl: apply scale factor when calculating window's dimension, Michael Tokarev, 2023/11/09