On Tue, 2025-11-18 at 17:39 +0800, Johnny-CC Chang wrote:

On Thu, 2025-11-13 at 10:39 +0100, Lukas Wunner wrote:

quoted

On Thu, Nov 13, 2025 at 04:44:06PM +0800, Johnny Chang wrote:

quoted

Nvidia GB10 PCIe hosts will encounter problem occasionally
after SBR(secondary bus reset) is applied.

Could you elaborate what kinds of problems occur, how often they
occur, etc?

There is about 1/1000 chance that after SBR is applied, any further
access via this root port will be blocked and make system crash. 

Thanks,

Johnny

I would like to update below description to replace original comment in
v1 patch, is this information sufficient? 
--------
/*
 * After SBR(secondary bus reset) is applied on an Nvidia GB10
 * PCIe root port, there is 1/1000 chance that further requests
 * via this root port will be blocked and cause system unstable.
 */
--------