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| author | Nicholas Piggin <npiggin@gmail.com> | 2025-05-12 13:10:22 +1000 |
|---|---|---|
| committer | Cédric Le Goater <clg@redhat.com> | 2025-07-21 08:03:52 +0200 |
| commit | 14bcc5239f4d4780ec52881779161c62c46e7243 (patch) | |
| tree | 5cfde2de03d4e367ae06fb91bf0d166d9628b00f /hw/intc | |
| parent | ad9175f8a2d7b4ef7d63e9663a42e7f7a44bc3f5 (diff) | |
| download | qemu-14bcc5239f4d4780ec52881779161c62c46e7243.zip qemu-14bcc5239f4d4780ec52881779161c62c46e7243.tar.gz qemu-14bcc5239f4d4780ec52881779161c62c46e7243.tar.bz2 | |
ppc/xive: tctx_notify should clear the precluded interrupt
If CPPR is lowered to preclude the pending interrupt, NSR should be
cleared and the qemu_irq should be lowered. This avoids some cases
of supurious interrupts.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Reviewed-by: Caleb Schlossin <calebs@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-14-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Diffstat (limited to 'hw/intc')
| -rw-r--r-- | hw/intc/xive.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/intc/xive.c b/hw/intc/xive.c index bc829be..a0a60a2 100644 --- a/hw/intc/xive.c +++ b/hw/intc/xive.c @@ -110,6 +110,9 @@ void xive_tctx_notify(XiveTCTX *tctx, uint8_t ring, uint8_t group_level) regs[TM_IPB], alt_regs[TM_PIPR], alt_regs[TM_CPPR], alt_regs[TM_NSR]); qemu_irq_raise(xive_tctx_output(tctx, ring)); + } else { + alt_regs[TM_NSR] = 0; + qemu_irq_lower(xive_tctx_output(tctx, ring)); } } |