From 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d Mon Sep 17 00:00:00 2001 From: Zeng Chi Date: Mon, 21 Sep 2026 18:24:42 +0800 Subject: KVM: Don't pre-reserve xarray entries when storing empty/NULL attributes Skip the xarray reservation loop when clearing all memory attributes, as storing NULL only erases the entry and never needs to allocate, so no reservation (and no cleanup of a failed one) is required in that case. Suggested-by: Sean Christopherson Cc: David Ballesteros Signed-off-by: Zeng Chi Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com [sean: split to separate patch] Signed-off-by: Sean Christopherson --- arch/mips/kvm/interrupt.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 arch/mips/kvm/interrupt.h (limited to 'arch/mips/kvm/interrupt.h') diff --git a/arch/mips/kvm/interrupt.h b/arch/mips/kvm/interrupt.h new file mode 100644 index 000000000..07bc0160b --- /dev/null +++ b/arch/mips/kvm/interrupt.h @@ -0,0 +1,43 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * KVM/MIPS: Interrupts + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + * Authors: Sanjay Lal + */ + +/* + * MIPS Exception Priorities, exceptions (including interrupts) are queued up + * for the guest in the order specified by their priorities + */ + +#define MIPS_EXC_RESET 0 +#define MIPS_EXC_SRESET 1 +#define MIPS_EXC_DEBUG_ST 2 +#define MIPS_EXC_DEBUG 3 +#define MIPS_EXC_DDB 4 +#define MIPS_EXC_NMI 5 +#define MIPS_EXC_MCHK 6 +#define MIPS_EXC_INT_TIMER 7 +#define MIPS_EXC_INT_IO_1 8 +#define MIPS_EXC_INT_IO_2 9 +#define MIPS_EXC_EXECUTE 10 +#define MIPS_EXC_INT_IPI_1 11 +#define MIPS_EXC_INT_IPI_2 12 +#define MIPS_EXC_MAX 13 +/* XXXSL More to follow */ + +#define C_TI (_ULCAST_(1) << 30) + +extern u32 *kvm_priority_to_irq; +u32 kvm_irq_to_priority(u32 irq); + +int kvm_mips_pending_timer(struct kvm_vcpu *vcpu); + +void kvm_mips_deliver_interrupts(struct kvm_vcpu *vcpu, u32 cause); + +#ifdef CONFIG_CPU_LOONGSON64 +extern void kvm_init_loongson_ipi(struct kvm *kvm); +#endif -- cgit v1.3.1