[PATCH v5 0/3] Support runtime configuration for per-VM's HGATP mode

[Andrew Jones]

On Wed, Feb 04, 2026 at 09:45:04PM +0800, fangyu.yu at linux.alibaba.com wrote:
> From: Fangyu Yu <fangyu.yu at linux.alibaba.com>
> 
> Currently, RISC-V KVM hardcodes the G-stage page table format (HGATP mode)
> to the maximum mode detected at boot time (e.g., SV57x4 if supported). but
> often such a wide GPA is unnecessary, just as a host sometimes doesn't need
> sv57.
> 
> This patch introduces per-VM configurability of the G-stage mode via a new
> KVM capability: KVM_CAP_RISCV_SET_HGATP_MODE. User-space can now explicitly
> request a specific HGATP mode (SV39x4, SV48x4, SV57x4 or SV32x4) during
> VM creation.
> 

For the series,

Reviewed-by: Andrew Jones <andrew.jones at oss.qualcomm.com>