mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

loongarch: mark loongarch_ipi_iocsr re-entrnacy safe

Browse Source 
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 6d0589e0e6)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Alexander Bulekov 2023-05-06 07:21:45 -04:00 committed by Michael Tokarev
parent 79873ecad0
commit c34e604bf6
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
hw/intc/loongarch_ipi.c
View File

@ -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,