summaryrefslogtreecommitdiffstats
path: root/drivers/cxl/pci.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-08-07 13:11:27 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-08-07 13:11:27 +0000
commit34996e42f82bfd60bc2c191e5cae3c6ab233ec6c (patch)
tree62db60558cbf089714b48daeabca82bf2b20b20e /drivers/cxl/pci.c
parentAdding debian version 6.8.12-1. (diff)
downloadlinux-34996e42f82bfd60bc2c191e5cae3c6ab233ec6c.tar.xz
linux-34996e42f82bfd60bc2c191e5cae3c6ab233ec6c.zip
Merging upstream version 6.9.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/cxl/pci.c')
-rw-r--r--drivers/cxl/pci.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
index 2ff361e756..659f9d46b1 100644
--- a/drivers/cxl/pci.c
+++ b/drivers/cxl/pci.c
@@ -957,11 +957,33 @@ static void cxl_error_resume(struct pci_dev *pdev)
dev->driver ? "successful" : "failed");
}
+static void cxl_reset_done(struct pci_dev *pdev)
+{
+ struct cxl_dev_state *cxlds = pci_get_drvdata(pdev);
+ struct cxl_memdev *cxlmd = cxlds->cxlmd;
+ struct device *dev = &pdev->dev;
+
+ /*
+ * FLR does not expect to touch the HDM decoders and related
+ * registers. SBR, however, will wipe all device configurations.
+ * Issue a warning if there was an active decoder before the reset
+ * that no longer exists.
+ */
+ guard(device)(&cxlmd->dev);
+ if (cxlmd->endpoint &&
+ cxl_endpoint_decoder_reset_detected(cxlmd->endpoint)) {
+ dev_crit(dev, "SBR happened without memory regions removal.\n");
+ dev_crit(dev, "System may be unstable if regions hosted system memory.\n");
+ add_taint(TAINT_USER, LOCKDEP_STILL_OK);
+ }
+}
+
static const struct pci_error_handlers cxl_error_handlers = {
.error_detected = cxl_error_detected,
.slot_reset = cxl_slot_reset,
.resume = cxl_error_resume,
.cor_error_detected = cxl_cor_error_detected,
+ .reset_done = cxl_reset_done,
};
static struct pci_driver cxl_pci_driver = {