From: Fan Ni <fan.ni@samsung.com>
Date: Thu, 23 May 2024 17:44:54 +0000 (-0700)
Subject: hw/mem/cxl_type3: Allow to release extent superset in QMP interface
X-Git-Tag: pull-vmclock-20250108~260^2~56
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=c51dca04281f9be6eacdad8fc8f9c7ddc87dcf3c;p=users%2Fdwmw2%2Fqemu.git

hw/mem/cxl_type3: Allow to release extent superset in QMP interface

Before the change, the QMP interface used for add/release DC extents
only allows to release an extent whose DPA range is contained by a single
accepted extent in the device.

With the change, we relax the constraints.  As long as the DPA range of
the extent is covered by accepted extents, we allow the release.

Tested-by: Svetly Todorov <svetly.todorov@memverge.com>
Reviewed-by: Gregory Price <gregory.price@memverge.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Fan Ni <fan.ni@samsung.com>
Message-Id: <20240523174651.1089554-15-nifan.cxl@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---

diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index 0d18259ec0..5d4a1276be 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -1947,7 +1947,7 @@ static void qmp_cxl_process_dynamic_capacity_prescriptive(const char *path,
                            "cannot release extent with pending DPA range");
                 return;
             }
-            if (!cxl_extents_contains_dpa_range(&dcd->dc.extents, dpa, len)) {
+            if (!ct3_test_region_block_backed(dcd, dpa, len)) {
                 error_setg(errp,
                            "cannot release extent with non-existing DPA range");
                 return;