Re: [PATCH v2 20/22] iommu/tegra241-cmdqv: Do not statically map LVCMDQs

ALOK TIWARI
2025-04-29T20:57:30Z

On 26-04-2025 11:28, Nicolin Chen wrote:
> However, with the user-owned VINTF support, it exposes a security concern:
> if user space VM only wants one LVCMDQ for a VINTF, statically mapping two
> LVCMDQs creates a hidden VCMDQ that user space could DoS attack by writing
> ramdon stuff to overwhelm the kernel with unhandleable IRQs.

typo ramdon -> random

>
> Thus, to support the user-owned VINTF feature, a LVCMDQ mapping has to be
> done dynamically.

Thanks,
Alok