Re: [PATCH] accel/qaic: Use kvcalloc() for slice requests allocation

[Jeff Hugo <jeff.hugo@oss.qualcomm.com>]

On 10/7/2025 6:18 AM, Youssef Samir wrote:
> From: Youssef Samir <quic_yabdulra@quicinc.com>
> 
> When a BO is created, qaic will use the page allocator to request the
> memory chunks that the BO will be composed of in-memory. The number of
> chunks increases when memory is segmented. For example, a 16MB BO can
> be composed of four 4MB chunks or 4096 4KB chunks.
> 
> A BO is then sliced into a single or multiple slices to be transferred
> to the device on the DBC's xfer queue. For that to happen, the slice
> needs to encode its memory chunks into DBC requests and keep track of
> them in an array, which is allocated using kcalloc(). Knowing that the
> BO might be very fragmented, this array can grow so large that the
> allocation may fail to find contiguous memory for it.
> 
> Replace kcalloc() with kvcalloc() to allocate the DBC requests array
> for a slice.
> 
> Signed-off-by: Youssef Samir <quic_yabdulra@quicinc.com>
> Signed-off-by: Youssef Samir <youssef.abdulrahman@oss.qualcomm.com>

Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com>