linux-kernel - [PATCH v3 0/6] KVM: LoongArch: selftests: Add timer test case

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Message-Id: <20251120065758.3064368-1-maobibo@loongson.cn>
Date: Thu, 20 Nov 2025 14:57:52 +0800
From: Bibo Mao <maobibo@...ngson.cn>
To: Paolo Bonzini <pbonzini@...hat.com>,
	Sean Christopherson <seanjc@...gle.com>,
	Huacai Chen <chenhuacai@...nel.org>
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH v3 0/6] KVM: LoongArch: selftests: Add timer test case

This patchset adds timer test case for LoongArch system, it is based
on common arch_timer test case. And it includes one-shot and period mode
timer interrupt test, software emulated timer function and time counter
test.
---
v2 ... v3:
  1. Adjust order about patch 2 and patch 3
  2. Add test case with alphabetical order
  3. Merge one-shot and period timer interrupt test case into one
  4. Only add LoongArch specific modification with common file
     Makefile.kvm

v1 ... v2:
  1. Restore PC and PRMD after exception handler
  2. Split patch 4 into two small patches with period timer test and
     time counter test
  3. With time counter test, set time count with 0 when create VM. And
     verify time count starts from 0 in guest code
---
Bibo Mao (6):
  KVM: LoongArch: selftests: Add system registers save and restore on
    exception
  KVM: LoongArch: selftests: Add basic interfaces
  KVM: LoongArch: selftests: Add exception handler register interface
  KVM: LoongArch: selftests: Add timer interrupt test case
  KVM: LoongArch: selftests: Add SW emulated timer test
  KVM: LoongArch: selftests: Add time counter test

 tools/testing/selftests/kvm/Makefile.kvm      |   1 +
 .../kvm/include/loongarch/arch_timer.h        |  84 ++++++++
 .../kvm/include/loongarch/processor.h         |  81 +++++++-
 .../selftests/kvm/lib/loongarch/exception.S   |   6 +
 .../selftests/kvm/lib/loongarch/processor.c   |  47 ++++-
 .../selftests/kvm/loongarch/arch_timer.c      | 194 ++++++++++++++++++
 6 files changed, 410 insertions(+), 3 deletions(-)
 create mode 100644 tools/testing/selftests/kvm/include/loongarch/arch_timer.h
 create mode 100644 tools/testing/selftests/kvm/loongarch/arch_timer.c


base-commit: 23cb64fb76257309e396ea4cec8396d4a1dbae68
-- 
2.39.3