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[Stable-8.0.5 10/66] apic: disable reentrancy detection for apic-msi
From: |
Michael Tokarev |
Subject: |
[Stable-8.0.5 10/66] apic: disable reentrancy detection for apic-msi |
Date: |
Wed, 13 Sep 2023 16:17:34 +0300 |
From: Alexander Bulekov <alxndr@bu.edu>
As the code is designed for re-entrant calls to apic-msi, mark apic-msi
as reentrancy-safe.
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Message-Id: <20230427211013.2994127-9-alxndr@bu.edu>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit 50795ee051a342c681a9b45671c552fbd6274db8)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/hw/intc/apic.c b/hw/intc/apic.c
index 20b5a94073..ac3d47d231 100644
--- a/hw/intc/apic.c
+++ b/hw/intc/apic.c
@@ -885,6 +885,13 @@ static void apic_realize(DeviceState *dev, Error **errp)
memory_region_init_io(&s->io_memory, OBJECT(s), &apic_io_ops, s,
"apic-msi",
APIC_SPACE_SIZE);
+ /*
+ * apic-msi's apic_mem_write can call into ioapic_eoi_broadcast, which can
+ * write back to apic-msi. As such mark the apic-msi region re-entrancy
+ * safe.
+ */
+ s->io_memory.disable_reentrancy_guard = true;
+
s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, apic_timer, s);
local_apics[s->id] = s;
--
2.39.2
- [Stable-8.0.5 00/66] v2 Patch Round-up for stable 8.0.5, freeze on 2023-09-19, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 01/66] memory: prevent dma-reentracy issues, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 02/66] async: Add an optional reentrancy guard to the BH API, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 03/66] async: avoid use-after-free on re-entrancy guard, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 04/66] checkpatch: add qemu_bh_new/aio_bh_new checks, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 05/66] hw: replace most qemu_bh_new calls with qemu_bh_new_guarded, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 06/66] lsi53c895a: disable reentrancy detection for script RAM, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 07/66] lsi53c895a: disable reentrancy detection for MMIO region, too, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 08/66] bcm2835_property: disable reentrancy detection for iomem, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 10/66] apic: disable reentrancy detection for apic-msi,
Michael Tokarev <=
- [Stable-8.0.5 09/66] raven: disable reentrancy detection for iomem, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 11/66] loongarch: mark loongarch_ipi_iocsr re-entrnacy safe, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 12/66] pnv_lpc: disable reentrancy detection for lpc-hc, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 57/66] arm64: Restore trapless ptimer access, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 56/66] virtio: Drop out of coroutine context in virtio_load(), Michael Tokarev, 2023/09/13
- [Stable-8.0.5 58/66] hw/char/riscv_htif: Fix printing of console characters on big endian hosts, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 59/66] hw/char/riscv_htif: Fix the console syscall on big endian hosts, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 60/66] hw/intc: Fix upper/lower mtime write calculation, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 61/66] hw/intc: Make rtc variable names consistent, Michael Tokarev, 2023/09/13
- [Stable-8.0.5 62/66] linux-user/riscv: Use abi type for target_ucontext, Michael Tokarev, 2023/09/13