Re: [PATCH v4] net/gve: allocate RX QPL pages using malloc

[Stephen Hemminger <stephen@networkplumber.org>]

On Thu,  9 Jan 2025 11:46:38 -0800
Joshua Washington <joshwash@google.com> wrote:

>  Kaligineedi <pkaligineedi@google.com>
> 
> Allocating QPL for an RX queue might fail if enough contiguous IOVA
> memory cannot be allocated. This can commonly occur when using 2MB huge
> pages because the 1024 4K buffers are allocated for each RX ring by
> default, resulting in 4MB for each ring. However, the only requirement
> for RX QPLs is that each 4K buffer be IOVA contiguous, not the entire
> QPL. Therefore, malloc will be used to allocate RX QPLs instead.
> 
> Note that TX queues require the entire QPL to be IOVA contiguous, so it
> will continue to use the memzone-based allocation.
> 
> v2: Updated RX path to use malloc exclusively
> 
> v3: Changed commit description to match updated code
> 
> v4: Add fixes tag to allow 2M hugepages to be used on older versions of
> DPDK
> 
> Fixes: a46583cf43c8 ("net/gve: support Rx/Tx")
> Cc: junfeng.guo@intel.com
> Cc: stable@dpdk.org
> 
> Signed-off-by: Praveen Kaligineedi <pkaligineedi@google.com>
> Signed-off-by: Joshua Washington <joshwash@google.com>
> ---

The standard practice is to put revision information below the cut line "---"
so it doesn't end up in the commit message.

I fixed that and applied it to next-net