From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52419) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WVhUF-0006ul-5G for qemu-devel@nongnu.org; Thu, 03 Apr 2014 09:15:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WVhU1-000206-0s for qemu-devel@nongnu.org; Thu, 03 Apr 2014 09:15:19 -0400 Received: from e23smtp02.au.ibm.com ([202.81.31.144]:39901) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WVhTz-0001r4-U1 for qemu-devel@nongnu.org; Thu, 03 Apr 2014 09:15:04 -0400 Received: from /spool/local by e23smtp02.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 3 Apr 2014 23:15:00 +1000 From: Alexey Kardashevskiy Date: Fri, 4 Apr 2014 00:14:48 +1100 Message-Id: <1396530891-6352-2-git-send-email-aik@ozlabs.ru> In-Reply-To: <1396530891-6352-1-git-send-email-aik@ozlabs.ru> References: <1396530891-6352-1-git-send-email-aik@ozlabs.ru> Subject: [Qemu-devel] [PATCH 1/4] kvm: Add set_one_reg/get_one_reg helpers List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Alexey Kardashevskiy , qemu-ppc@nongnu.org, Alexander Graf This adds QEMU wrappers for KVM_SET_ONE_REG/KVM_GET_ONE_REG ioctls. Signed-off-by: Alexey Kardashevskiy --- Changes: v3: * changed comments v2: * added Doc Comments * removed error_print --- include/sysemu/kvm.h | 21 +++++++++++++++++++++ kvm-all.c | 18 ++++++++++++++++++ 2 files changed, 39 insertions(+) diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index 0bee1e8..c3471de 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -353,4 +353,25 @@ void kvm_init_irq_routing(KVMState *s); * > 0: irq chip was created */ int kvm_arch_irqchip_create(KVMState *s); + +/** + * kvm_set_one_reg - set a register value in KVM via KVM_SET_ONE_REG ioctl + * @id: The register ID + * @addr: The pointer to a value must point to a variable of the correct + * type/size for the register being accessed. + * + * Returns: 0 on success, or a negative errno on failure. + */ +int kvm_set_one_reg(CPUState *cs, uint64_t id, void *addr); + +/** + * kvm_get_one_reg - get a register value from KVM via KVM_GET_ONE_REG ioctl + * @id: The register ID + * @addr: The pointer to a value must point to a variable of the correct + * type/size for the register being accessed. + * + * Returns: 0 on success, or a negative errno on failure. + */ +int kvm_get_one_reg(CPUState *cs, uint64_t id, void *addr); + #endif diff --git a/kvm-all.c b/kvm-all.c index cd4111d..fc30181 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -2114,3 +2114,21 @@ int kvm_create_device(KVMState *s, uint64_t type, bool test) return test ? 0 : create_dev.fd; } + +int kvm_set_one_reg(CPUState *cs, uint64_t id, void *addr) +{ + struct kvm_one_reg reg = { + .id = id, + .addr = (uintptr_t)addr, + }; + return kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, ®); +} + +int kvm_get_one_reg(CPUState *cs, uint64_t id, void *addr) +{ + struct kvm_one_reg reg = { + .id = id, + .addr = (uintptr_t)addr, + }; + return kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, ®); +} -- 1.8.4.rc4