On Mon, Apr 08, 2013 at 05:17:17PM +0100, Marc Zyngier wrote: > Let userspace play with the guest registers. > > Reviewed-by: Christopher Covington <cov@xxxxxxxxxxxxxx> > Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx> > --- > arch/arm64/kvm/guest.c | 254 +++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 254 insertions(+) > create mode 100644 arch/arm64/kvm/guest.c > > diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c > new file mode 100644 > index 0000000..47d3729 > --- /dev/null > +++ b/arch/arm64/kvm/guest.c > @@ -0,0 +1,254 @@ > +/* > + * Copyright (C) 2012,2013 - ARM Ltd > + * Author: Marc Zyngier <marc.zyngier@xxxxxxx> > + * > + * Derived from arch/arm/kvm/guest.c: > + * Copyright (C) 2012 - Virtual Open Systems and Columbia University > + * Author: Christoffer Dall <c.dall@xxxxxxxxxxxxxxxxxxxxxx> > + * > + * 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, see <http://www.gnu.org/licenses/>. > + */ > + > +#include <linux/errno.h> > +#include <linux/err.h> > +#include <linux/kvm_host.h> > +#include <linux/module.h> > +#include <linux/vmalloc.h> > +#include <linux/fs.h> > +#include <asm/cputype.h> > +#include <asm/uaccess.h> > +#include <asm/kvm.h> > +#include <asm/kvm_asm.h> > +#include <asm/kvm_emulate.h> > +#include <asm/kvm_coproc.h> > + > +struct kvm_stats_debugfs_item debugfs_entries[] = { > + { NULL } > +}; > + > +int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) > +{ > + vcpu->arch.hcr_el2 = HCR_GUEST_FLAGS; > + return 0; > +} > + > +static u64 core_reg_offset_from_id(u64 id) > +{ > + return id & ~(KVM_REG_ARCH_MASK | KVM_REG_SIZE_MASK | KVM_REG_ARM_CORE); > +} > + > +static int get_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) > +{ > + __u32 __user *uaddr = (__u32 __user *)(unsigned long)reg->addr; > + struct kvm_regs *regs = vcpu_gp_regs(vcpu); > + int nr_regs = sizeof(*regs) / sizeof(__u32); Why are you treating the registers as u32? Will -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
