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[PULL,18/19] xen/pt/msi: Add the register value when printing logging and error messages

Message ID 1441732880-19888-18-git-send-email-stefano.stabellini@eu.citrix.com
State New
Headers show

Commit Message

Stefano Stabellini Sept. 8, 2015, 5:21 p.m. UTC 
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

We would like to know what the MSI register value is to help
in troubleshooting in the field. As such modify the logging
logic to include such details in xen_pt_msgctrl_reg_write.

Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
 hw/xen/xen_pt_config_init.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
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Patch

diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c
index 9fb3670..56c84e1 100644
--- a/hw/xen/xen_pt_config_init.c
+++ b/hw/xen/xen_pt_config_init.c
@@ -1102,7 +1102,7 @@  static int xen_pt_msgctrl_reg_write(XenPCIPassthroughState *s,
         /* setup MSI pirq for the first time */
         if (!msi->initialized) {
             /* Init physical one */
-            XEN_PT_LOG(&s->dev, "setup MSI\n");
+            XEN_PT_LOG(&s->dev, "setup MSI (register: %x).\n", *val);
             if (xen_pt_msi_setup(s)) {
                 /* We do not broadcast the error to the framework code, so
                  * that MSI errors are contained in MSI emulation code and
@@ -1110,12 +1110,12 @@  static int xen_pt_msgctrl_reg_write(XenPCIPassthroughState *s,
                  * Guest MSI would be actually not working.
                  */
                 *val &= ~PCI_MSI_FLAGS_ENABLE;
-                XEN_PT_WARN(&s->dev, "Can not map MSI.\n");
+                XEN_PT_WARN(&s->dev, "Can not map MSI (register: %x)!\n", *val);
                 return 0;
             }
             if (xen_pt_msi_update(s)) {
                 *val &= ~PCI_MSI_FLAGS_ENABLE;
-                XEN_PT_WARN(&s->dev, "Can not bind MSI\n");
+                XEN_PT_WARN(&s->dev, "Can not bind MSI (register: %x)!\n", *val);
                 return 0;
             }
             msi->initialized = true;