Re: [PATCH RESEND 0/2] riscv: iommu: Add shutdown callback for kexec

Joerg Roedel
2025-01-06T11:39:36Z

On Fri, Jan 03, 2025 at 05:32:18PM +0800, Xu Lu wrote:
> After kexec, the newly booted kernel can not initialize iommu driver
> successfully as no one resets iommu state before kexec.
>
> This patch series supplies shutdown callback for iommu driver. The shutdown
> callback resets necessary registers so that newly booted kernel can pass
> riscv_iommu_init_check() after kexec.
>
> Xu Lu (2):
> iommu/riscv: Empty iommu queue before enabling it
> iommu/riscv: Add shutdown function for iommu driver
>
> drivers/iommu/riscv/iommu-pci.c | 8 ++++++++
> drivers/iommu/riscv/iommu-platform.c | 6 ++++++
> drivers/iommu/riscv/iommu.c | 12 ++++++++++--
> drivers/iommu/riscv/iommu.h | 1 +
> 4 files changed, 25 insertions(+), 2 deletions(-)

Applied, thanks.