From: Nicholas Piggin <npig...@gmail.com> When CPPR priority is decreased, pending interrupts do not need to be re-checked if one is already presented because by definition that will be the highest priority.
This prevents a presented group interrupt from being lost. Signed-off-by: Nicholas Piggin <npig...@gmail.com> Reviewed-by: Glenn Miles <mil...@linux.ibm.com> Reviewed-by: Michael Kowal <ko...@linux.ibm.com> Tested-by: Gautam Menghani <gau...@linux.ibm.com> Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-39-npig...@gmail.com Signed-off-by: Cédric Le Goater <c...@redhat.com> --- hw/intc/xive2.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/hw/intc/xive2.c b/hw/intc/xive2.c index be945bef1c53..531e6517baa2 100644 --- a/hw/intc/xive2.c +++ b/hw/intc/xive2.c @@ -1250,7 +1250,9 @@ static void xive2_tctx_set_cppr(XiveTCTX *tctx, uint8_t sig_ring, uint8_t cppr) } /* CPPR priority decreased (higher value) */ - xive2_tctx_process_pending(tctx, sig_ring); + if (!xive_nsr_indicates_exception(sig_ring, nsr)) { + xive2_tctx_process_pending(tctx, sig_ring); + } } void xive2_tm_set_hv_cppr(XivePresenter *xptr, XiveTCTX *tctx, -- 2.50.1
