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| author | Nicholas Piggin <npiggin@gmail.com> | 2025-05-12 13:10:20 +1000 |
|---|---|---|
| committer | Cédric Le Goater <clg@redhat.com> | 2025-07-21 08:03:52 +0200 |
| commit | 3abbec04e627396c32f2b7b7461961fb68c5c122 (patch) | |
| tree | ccfdb1b72e877a87f0642c1cee9d4846a8fc2786 /hw/intc | |
| parent | d4720a7faf4bb415f3fe7f10e5c888212b81316a (diff) | |
| download | qemu-3abbec04e627396c32f2b7b7461961fb68c5c122.zip qemu-3abbec04e627396c32f2b7b7461961fb68c5c122.tar.gz qemu-3abbec04e627396c32f2b7b7461961fb68c5c122.tar.bz2 | |
ppc/xive2: Do not present group interrupt on OS-push if precluded by CPPR
Group interrupts should not be taken from the backlog and presented
if they are precluded by CPPR.
Fixes: 855434b3b8 ("ppc/xive2: Process group backlog when pushing an OS context")
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/20250512031100.439842-12-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Diffstat (limited to 'hw/intc')
| -rw-r--r-- | hw/intc/xive2.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/hw/intc/xive2.c b/hw/intc/xive2.c index c23933f..181d1ae 100644 --- a/hw/intc/xive2.c +++ b/hw/intc/xive2.c @@ -845,7 +845,9 @@ static void xive2_tctx_need_resend(Xive2Router *xrtr, XiveTCTX *tctx, group_prio = xive2_presenter_backlog_scan(xptr, nvp_blk, nvp_idx, first_group, &group_level); regs[TM_LSMFB] = group_prio; - if (regs[TM_LGS] && group_prio < backlog_prio) { + if (regs[TM_LGS] && group_prio < backlog_prio && + group_prio < regs[TM_CPPR]) { + /* VP can take a group interrupt */ xive2_presenter_backlog_decr(xptr, nvp_blk, nvp_idx, group_prio, group_level); |