Re: [PATCH v1] arm64: dts: qcom: talos: Make the ADSP remote heap no-map

[Konrad Dybcio]

On 10/14/26 10:38 AM, Jianping Li wrote:
> The ADSP remote heap is declared as a reusable CMA pool. FastRPC
> assigns the entire region to the DSP through qcom_scm_assign_mem()
> during probe without allocating the pages from CMA. Consequently,
> the pages remain available for movable HLOS allocations even after
> HLOS access to the region has been revoked.
> 
> On Talos, GPU stress testing triggers a synchronous external abort
> when zram accesses pages within the ADSP remote heap.
> 
> Replace reusable with no-map to prevent the region from being reused
> for normal kernel allocations and exclude it from the kernel's
> standard memory mapping.
> 
> Fixes: b0b51a5f1911f ("arm64: dts: qcom: talos: Add memory-region for audio PD")
> Link: https://lore.kernel.org/all/20260424-talosaudio-v3-1-9e2ad5d78a2e@xxxxxxxxxxxxxxxx/
> Signed-off-by: Jianping Li <jianping.li@xxxxxxxxxxxxxxxx>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>

Konrad