From: Glenn Miles <mil...@linux.ibm.com>
According to the XIVE spec, updating the CPPR should also update the
PIPR. The final value of the PIPR depends on other factors, but it
should never be set to a value that is above the CPPR.
Also added support for redistributing an active group interrupt when it
is precluded as a result of changing the CPPR value.
Signed-off-by: Glenn Miles <mil...@linux.ibm.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 2b4d0f51be..1971c05fa1 100644
--- a/hw/intc/xive2.c
+++ b/hw/intc/xive2.c
@@ -995,7 +995,9 @@ static void xive2_tctx_set_cppr(XiveTCTX *tctx, uint8_t
ring, uint8_t cppr)
}
}
}
- regs[TM_PIPR] = pipr_min;
+
+ /* PIPR should not be set to a value greater than CPPR */
+ regs[TM_PIPR] = (pipr_min > cppr) ? cppr : pipr_min;
rc = xive2_tctx_get_nvp_indexes(tctx, ring_min, &nvp_blk, &nvp_idx);
if (rc) {
--
2.47.1
