linux-kernel - [PATCH 0/3] LoongArch: KVM: Add FPU delay load support

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Message-Id: <20260122111434.1737872-1-maobibo@loongson.cn>
Date: Thu, 22 Jan 2026 19:14:30 +0800
From: Bibo Mao <maobibo@...ngson.cn>
To: Huacai Chen <chenhuacai@...nel.org>,
	WANG Xuerui <kernel@...0n.name>,
	Tianrui Zhao <zhaotianrui@...ngson.cn>
Cc: loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org
Subject: [PATCH 0/3] LoongArch: KVM: Add FPU delay load support

FPU is lazy enabled in KVM hypervisor. After FPU is enabled and loaded,
vCPU can be preempted and FPU will be lost again. Here FPU is delay load
until guest enter entry.

Bibo Mao (3):
  LoongArch: KVM: Move LSX capability check in LSX exception handler
  LoongArch: KVM: Move LASX capability check in LASX exception handler
  LoongArch: KVM: Add FPU delay load support

 arch/loongarch/include/asm/kvm_host.h |  3 +++
 arch/loongarch/kvm/exit.c             | 10 ++++++---
 arch/loongarch/kvm/vcpu.c             | 30 ++++++++-------------------
 3 files changed, 19 insertions(+), 24 deletions(-)


base-commit: 24d479d26b25bce5faea3ddd9fa8f3a6c3129ea7
-- 
2.39.3