linux-kernel - [PATCH RESEND 0/2] riscv: iommu: Add shutdown callback for kexec

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250103093220.38106-1-luxu.kernel@bytedance.com>
Date: Fri,  3 Jan 2025 17:32:18 +0800
From: Xu Lu <luxu.kernel@...edance.com>
To: tjeznach@...osinc.com,
	joro@...tes.org,
	will@...nel.org
Cc: lihangjing@...edance.com,
	xieyongji@...edance.com,
	guojinhui.liam@...edance.com,
	linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Xu Lu <luxu.kernel@...edance.com>
Subject: [PATCH RESEND 0/2] riscv: iommu: Add shutdown callback for kexec

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(-)

-- 
2.20.1