Re: [PATCH 1/1] pcie-root-port: Fast PCIe root ports for new machine

2024-12-03 Thread Gao,Shiyuan
> > There was a question from Jonathan Cameron on the original posting of this > patch that is awaiting your answer Sorry, the reply is forgotten to cc qemu-devel, I have resend it. > > > Regardless, at this time in the release cycle its too late for 9.2, so this > patch would likely need to

Re: [PATCH 1/1] pcie-root-port: Fast PCIe root ports for new machine

2024-12-03 Thread Gao,Shiyuan
> > Some hardware devices now support PCIe 5.0, so change the default > > speed of the PCIe root port on new machine types. > > > > For passthrough Nvidia H20, this will be able to increase the h2d/d2h > > bandwidth ~17%. > > > I'm curious. Why are you seeing the perf improvement? > > > Maybe my me

Re: [PATCH 1/1] pcie-root-port: Fast PCIe root ports for new machine

2024-12-03 Thread Daniel P . Berrangé
On Tue, Dec 03, 2024 at 10:58:22AM +, Gao,Shiyuan via wrote: > > Some hardware devices now support PCIe 5.0, so change the default > > speed of the PCIe root port on new machine types. > > > > For passthrough Nvidia H20, this will be able to increase the h2d/d2h > > bandwidth ~17%. > > > > Orig

[PATCH 1/1] pcie-root-port: Fast PCIe root ports for new machine

2024-12-03 Thread Gao,Shiyuan
> Some hardware devices now support PCIe 5.0, so change the default > speed of the PCIe root port on new machine types. > > For passthrough Nvidia H20, this will be able to increase the h2d/d2h > bandwidth ~17%. > > Origin: > [CUDA Bandwidth Test] - Starting... > Running on... > > Device 0: NVIDIA

Re: [PATCH 1/1] pcie-root-port: Fast PCIe root ports for new machine

2024-11-18 Thread Jonathan Cameron via
On Sun, 17 Nov 2024 22:39:17 +0800 Gao Shiyuan via wrote: > Some hardware devices now support PCIe 5.0, so change the default > speed of the PCIe root port on new machine types. > > For passthrough Nvidia H20, this will be able to increase the h2d/d2h > bandwidth ~17%. I'm curious. Why are you

[PATCH 1/1] pcie-root-port: Fast PCIe root ports for new machine

2024-11-17 Thread Gao Shiyuan via
Some hardware devices now support PCIe 5.0, so change the default speed of the PCIe root port on new machine types. For passthrough Nvidia H20, this will be able to increase the h2d/d2h bandwidth ~17%. Origin: [CUDA Bandwidth Test] - Starting... Running on... Device 0: NVIDIA H20 Quick Mode