From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f199.google.com (mail-wr0-f199.google.com [209.85.128.199]) by kanga.kvack.org (Postfix) with ESMTP id DABA86B025E for ; Mon, 18 Dec 2017 14:07:00 -0500 (EST) Received: by mail-wr0-f199.google.com with SMTP id j4so9947091wrg.15 for ; Mon, 18 Dec 2017 11:07:00 -0800 (PST) Received: from mx02.buh.bitdefender.com (mx02.bbu.dsd.mx.bitdefender.com. [91.199.104.133]) by mx.google.com with ESMTPS id m64si18082wmc.77.2017.12.18.11.06.59 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 18 Dec 2017 11:06:59 -0800 (PST) From: =?UTF-8?q?Adalber=20Laz=C4=83r?= Subject: [RFC PATCH v4 05/18] kvm: x86: add kvm_arch_vcpu_set_regs() Date: Mon, 18 Dec 2017 21:06:29 +0200 Message-Id: <20171218190642.7790-6-alazar@bitdefender.com> In-Reply-To: <20171218190642.7790-1-alazar@bitdefender.com> References: <20171218190642.7790-1-alazar@bitdefender.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org List-ID: To: kvm@vger.kernel.org Cc: linux-mm@kvack.org, Paolo Bonzini , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Xiao Guangrong , =?UTF-8?q?Mihai=20Don=C8=9Bu?= , Adalbert Lazar From: Adalbert Lazar This is a version of kvm_arch_vcpu_ioctl_set_regs() which does not touch the exceptions vector. Signed-off-by: Mihai DonE?u --- arch/x86/kvm/x86.c | 34 ++++++++++++++++++++++++++++++++++ include/linux/kvm_host.h | 1 + 2 files changed, 35 insertions(+) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index e1a3c2c6ec08..4b0c3692386d 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7389,6 +7389,40 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) return 0; } +/* + * Similar to kvm_arch_vcpu_ioctl_set_regs() but it does not reset + * the exceptions + */ +void kvm_arch_vcpu_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) +{ + vcpu->arch.emulate_regs_need_sync_from_vcpu = true; + vcpu->arch.emulate_regs_need_sync_to_vcpu = false; + + kvm_register_write(vcpu, VCPU_REGS_RAX, regs->rax); + kvm_register_write(vcpu, VCPU_REGS_RBX, regs->rbx); + kvm_register_write(vcpu, VCPU_REGS_RCX, regs->rcx); + kvm_register_write(vcpu, VCPU_REGS_RDX, regs->rdx); + kvm_register_write(vcpu, VCPU_REGS_RSI, regs->rsi); + kvm_register_write(vcpu, VCPU_REGS_RDI, regs->rdi); + kvm_register_write(vcpu, VCPU_REGS_RSP, regs->rsp); + kvm_register_write(vcpu, VCPU_REGS_RBP, regs->rbp); +#ifdef CONFIG_X86_64 + kvm_register_write(vcpu, VCPU_REGS_R8, regs->r8); + kvm_register_write(vcpu, VCPU_REGS_R9, regs->r9); + kvm_register_write(vcpu, VCPU_REGS_R10, regs->r10); + kvm_register_write(vcpu, VCPU_REGS_R11, regs->r11); + kvm_register_write(vcpu, VCPU_REGS_R12, regs->r12); + kvm_register_write(vcpu, VCPU_REGS_R13, regs->r13); + kvm_register_write(vcpu, VCPU_REGS_R14, regs->r14); + kvm_register_write(vcpu, VCPU_REGS_R15, regs->r15); +#endif + + kvm_rip_write(vcpu, regs->rip); + kvm_set_rflags(vcpu, regs->rflags); + + kvm_make_request(KVM_REQ_EVENT, vcpu); +} + void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l) { struct kvm_segment cs; diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 6bdd4b9f6611..68e4d756f5c9 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -767,6 +767,7 @@ int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); +void kvm_arch_vcpu_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs); int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org