diff options
| author | Alexander Bulekov <alxndr@bu.edu> | 2023-05-06 07:21:45 -0400 |
|---|---|---|
| committer | Michael Tokarev <mjt@tls.msk.ru> | 2023-09-11 10:53:50 +0300 |
| commit | c34e604bf6b887bed8b2788d42e756151d912fa9 (patch) | |
| tree | 413b6b75b1dda9b6830bd8a9275d35a0d83c30b1 /hw | |
| parent | 79873ecad01a10f1809e31121bd9a2eb461d60de (diff) | |
loongarch: mark loongarch_ipi_iocsr re-entrnacy safe
loongarch_ipi_iocsr MRs rely on re-entrant IO through the ipi_send
function. As such, mark these MRs re-entrancy-safe.
Fixes: a2e1753b80 ("memory: prevent dma-reentracy issues")
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230506112145.3563708-1-alxndr@bu.edu>
Signed-off-by: Song Gao <gaosong@loongson.cn>
(cherry picked from commit 6d0589e0e6c64b888864a2bf980537be20389264)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/intc/loongarch_ipi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/intc/loongarch_ipi.c b/hw/intc/loongarch_ipi.c index aa4bf9eb74..40e98af2ce 100644 --- a/hw/intc/loongarch_ipi.c +++ b/hw/intc/loongarch_ipi.c @@ -215,6 +215,10 @@ static void loongarch_ipi_init(Object *obj) for (cpu = 0; cpu < MAX_IPI_CORE_NUM; cpu++) { memory_region_init_io(&s->ipi_iocsr_mem[cpu], obj, &loongarch_ipi_ops, &lams->ipi_core[cpu], "loongarch_ipi_iocsr", 0x48); + + /* loongarch_ipi_iocsr performs re-entrant IO through ipi_send */ + s->ipi_iocsr_mem[cpu].disable_reentrancy_guard = true; + sysbus_init_mmio(sbd, &s->ipi_iocsr_mem[cpu]); memory_region_init_io(&s->ipi64_iocsr_mem[cpu], obj, &loongarch_ipi64_ops, |