cregit-Linux how code gets into the kernel

Release 4.11 arch/arm/kvm/reset.c

Directory: arch/arm/kvm
/*
 * Copyright (C) 2012 - Virtual Open Systems and Columbia University
 * Author: Christoffer Dall <c.dall@virtualopensystems.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2, as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
#include <linux/compiler.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kvm_host.h>
#include <linux/kvm.h>

#include <asm/unified.h>
#include <asm/ptrace.h>
#include <asm/cputype.h>
#include <asm/kvm_arm.h>
#include <asm/kvm_coproc.h>

#include <kvm/arm_arch_timer.h>

/******************************************************************************
 * Cortex-A15 and Cortex-A7 Reset Values
 */


static struct kvm_regs cortexa_regs_reset = {
	.usr_regs.ARM_cpsr = SVC_MODE | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT,
};


static const struct kvm_irq_level cortexa_ptimer_irq = {
	{ .irq = 30 },
	.level = 1,
};


static const struct kvm_irq_level cortexa_vtimer_irq = {
	{ .irq = 27 },
	.level = 1,
};


/*******************************************************************************
 * Exported reset function
 */

/**
 * kvm_reset_vcpu - sets core registers and cp15 registers to reset value
 * @vcpu: The VCPU pointer
 *
 * This function finds the right table above and sets the registers on the
 * virtual CPU struct to their architecturally defined reset values.
 */

int kvm_reset_vcpu(struct kvm_vcpu *vcpu) { struct kvm_regs *reset_regs; const struct kvm_irq_level *cpu_vtimer_irq; const struct kvm_irq_level *cpu_ptimer_irq; switch (vcpu->arch.target) { case KVM_ARM_TARGET_CORTEX_A7: case KVM_ARM_TARGET_CORTEX_A15: reset_regs = &cortexa_regs_reset; vcpu->arch.midr = read_cpuid_id(); cpu_vtimer_irq = &cortexa_vtimer_irq; cpu_ptimer_irq = &cortexa_ptimer_irq; break; default: return -ENODEV; } /* Reset core registers */ memcpy(&vcpu->arch.ctxt.gp_regs, reset_regs, sizeof(vcpu->arch.ctxt.gp_regs)); /* Reset CP15 registers */ kvm_reset_coprocs(vcpu); /* Reset arch_timer context */ return kvm_timer_vcpu_reset(vcpu, cpu_vtimer_irq, cpu_ptimer_irq); }

Contributors

PersonTokensPropCommitsCommitProp
Christoffer Dall7161.21%114.29%
Anup Patel1714.66%114.29%
Jintack Lim1311.21%114.29%
Marc Zyngier76.03%228.57%
Jonathan Austin54.31%114.29%
Olof Johansson32.59%114.29%
Total116100.00%7100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Christoffer Dall12458.22%222.22%
Anup Patel3717.37%111.11%
Jintack Lim3315.49%111.11%
Jonathan Austin83.76%111.11%
Marc Zyngier73.29%222.22%
Olof Johansson31.41%111.11%
Andrea Gelmini10.47%111.11%
Total213100.00%9100.00%
Directory: arch/arm/kvm
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.