linux-kernel - [PATCH v3 0/9] LoongArch: KVM: INTC: Enhancement about eiointc emulation

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Message-Id: <20250611014651.3042734-1-maobibo@loongson.cn>
Date: Wed, 11 Jun 2025 09:46:42 +0800
From: Bibo Mao <maobibo@...ngson.cn>
To: Tianrui Zhao <zhaotianrui@...ngson.cn>,
	Huacai Chen <chenhuacai@...nel.org>,
	Xianglai Li <lixianglai@...ngson.cn>
Cc: kvm@...r.kernel.org,
	loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH v3 0/9] LoongArch: KVM: INTC: Enhancement about eiointc emulation

This series fix five issues about kernel eiointc emulation list as
follows:
  1. The first patch fixes type forced assignment issue.
  2. The second patch fixes interrupt route with physical cpu.
  3. The third patch disables update property num_cpu and feature
  4. The fourth patch adds validation check about num_cpu from user
     space.
  5. Overflow with array index when emulate register EIOINTC_ENABLE
     writing operation.

Also there is code cleanup with kernel eiointc emulation.

---
v2 ... v3:
  1. Add prefix INTC: in title of every patch.
  2. Fix array index overflow when emulate register EIOINTC_ENABLE
     writing operation.
  3. Add address alignment check with eiointc register access operation.

v1 ... v2:
  1. Add extra fix in patch 3 and patch 4, add num_cpu validation check
  2. Name of stat information keeps unchanged, only move it from VM stat
     to vCPU stat.
---

Bibo Mao (9):
  LoongArch: KVM: INTC: Fix interrupt route update with eiointc
  LoongArch: KVM: INTC: Check interrupt route from physical cpu
  LoongArch: KVM: INTC: Disable update property num_cpu and feature
  LoongArch: KVM: INTC: Check validation of num_cpu from user space
  LoongArch: KVM: INTC: Avoid overflow with array index
  LoongArch: KVM: INTC: Use standard bitops API with eiointc
  LoongArch: KVM: INTC: Remove unused parameter len
  LoongArch: KVM: INTC: Add stat information with kernel irqchip
  LoongArch: KVM: INTC: Add address alignment check

 arch/loongarch/include/asm/kvm_host.h |  12 +-
 arch/loongarch/kvm/intc/eiointc.c     | 167 +++++++++++++++-----------
 arch/loongarch/kvm/intc/ipi.c         |  28 +----
 arch/loongarch/kvm/intc/pch_pic.c     |   4 +-
 arch/loongarch/kvm/vcpu.c             |   8 +-
 5 files changed, 117 insertions(+), 102 deletions(-)


base-commit: aef17cb3d3c43854002956f24c24ec8e1a0e3546
-- 
2.39.3