From: Joerg Roedel <joro@8bytes.org>
To: Xu Lu <luxu.kernel@bytedance.com>
Cc: tjeznach@rivosinc.com, will@kernel.org, lihangjing@bytedance.com,
xieyongji@bytedance.com, guojinhui.liam@bytedance.com,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH RESEND 0/2] riscv: iommu: Add shutdown callback for kexec
Date: Mon, 6 Jan 2025 12:39:34 +0100 [thread overview]
Message-ID: <Z3vA9go8BVbunBQZ@8bytes.org> (raw)
In-Reply-To: <20250103093220.38106-1-luxu.kernel@bytedance.com>
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.
next prev parent reply other threads:[~2025-01-06 11:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-03 9:32 [PATCH RESEND 0/2] riscv: iommu: Add shutdown callback for kexec Xu Lu
2025-01-03 9:32 ` [PATCH RESEND 1/2] iommu/riscv: Empty iommu queue before enabling it Xu Lu
2025-01-03 9:32 ` [PATCH RESEND 2/2] iommu/riscv: Add shutdown function for iommu driver Xu Lu
2025-01-06 11:39 ` Joerg Roedel [this message]
2025-02-03 19:15 ` [PATCH RESEND 0/2] riscv: iommu: Add shutdown callback for kexec patchwork-bot+linux-riscv
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