Re: [Xen-devel] [PATCH v1 5/6] xen/pt/msi: Add the register value when printing logging and error messages

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Thu, 2 Jul 2015, Konrad Rzeszutek Wilk wrote:
> 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.
> 
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

Reviewed-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>


>  hw/xen/xen_pt_config_init.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c
> index dd37be3..462e1b9 100644
> --- a/hw/xen/xen_pt_config_init.c
> +++ b/hw/xen/xen_pt_config_init.c
> @@ -1086,7 +1086,7 @@ 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
> @@ -1094,12 +1094,12 @@ 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;
> -- 
> 2.1.0
> 

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