linux-kernel - [PATCH v3 0/2] Fix hgatp mode settings within kvm_riscv_gstage_vmid

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: <20250820125952.71689-1-fangyu.yu@linux.alibaba.com>
Date: Wed, 20 Aug 2025 20:59:50 +0800
From: fangyu.yu@...ux.alibaba.com
To: anup@...infault.org,
	atish.patra@...ux.dev,
	paul.walmsley@...ive.com,
	palmer@...belt.com,
	aou@...s.berkeley.edu,
	alex@...ti.fr
Cc: guoren@...nel.org,
	kvm@...r.kernel.org,
	kvm-riscv@...ts.infradead.org,
	linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Fangyu Yu <fangyu.yu@...ux.alibaba.com>
Subject: [PATCH v3 0/2] Fix hgatp mode settings within kvm_riscv_gstage_vmid_detect 

From: Fangyu Yu <fangyu.yu@...ux.alibaba.com>

According to the RISC-V Privileged Architecture Spec, when MODE=Bare
is selected,software must write zero to the remaining fields of hgatp.

So,use a valid mode when detecting vmids of the HW supported,meanwhile
remove unnecessary HGATP csr_read.

---
Changes in v3:
 - Add "Fixes" tag.
 - Involve("RISC-V KVM: Remove unnecessary HGATP csr_read"), which
   depends on patch 1.

Changes in v2:
 - Fixed build error since kvm_riscv_gstage_mode() has been modified.
---

Fangyu Yu (1):
  RISC-V: KVM: Write hgatp register with valid mode bits

Guo Ren (Alibaba DAMO Academy) (1):
  RISC-V KVM: Remove unnecessary HGATP csr_read

 arch/riscv/kvm/vmid.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

-- 
2.49.0