Fix hgatp mode settings within kvm_riscv_gstage_vmid_detect

[PATCH v3 0/2] Fix hgatp mode settings within kvm_riscv_gstage_vmid_detect

fangyu.yu@linux.alibaba.com posted 2 patches 1 month, 2 weeks ago

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

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[PATCH v3 0/2] Fix hgatp mode settings within kvm_riscv_gstage_vmid_detect

Posted by fangyu.yu@linux.alibaba.com 1 month, 2 weeks ago

From: Fangyu Yu <fangyu.yu@linux.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(-)

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2.49.0