From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: Re: [PATCH] tile: support KVM for tilegx Date: Mon, 12 Aug 2013 19:08:18 +0200 Message-ID: <52091682.8020004@siemens.com> References: <201308121615.r7CGFstm024706@farm-0021.internal.tilera.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Gleb Natapov , Paolo Bonzini To: Chris Metcalf Return-path: Received: from thoth.sbs.de ([192.35.17.2]:17282 "EHLO thoth.sbs.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756725Ab3HLRI0 (ORCPT ); Mon, 12 Aug 2013 13:08:26 -0400 In-Reply-To: <201308121615.r7CGFstm024706@farm-0021.internal.tilera.com> Sender: kvm-owner@vger.kernel.org List-ID: On 2013-08-12 17:24, Chris Metcalf wrote: > This change provides the initial framework support for KVM on tilegx. > Basic virtual disk and networking is supported. > > Signed-off-by: Chris Metcalf > --- ... > diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h > index acccd08..d3879c5 100644 > --- a/include/uapi/linux/kvm.h > +++ b/include/uapi/linux/kvm.h > @@ -171,6 +171,7 @@ struct kvm_pit_config { > #define KVM_EXIT_WATCHDOG 21 > #define KVM_EXIT_S390_TSCH 22 > #define KVM_EXIT_EPR 23 > +#define KVM_EXIT_AGAIN 24 > > /* For KVM_EXIT_INTERNAL_ERROR */ > /* Emulate instruction failed. */ > @@ -1012,6 +1013,8 @@ struct kvm_s390_ucas_mapping { > #define KVM_KVMCLOCK_CTRL _IO(KVMIO, 0xad) > #define KVM_ARM_VCPU_INIT _IOW(KVMIO, 0xae, struct kvm_vcpu_init) > #define KVM_GET_REG_LIST _IOWR(KVMIO, 0xb0, struct kvm_reg_list) > +/* Reset some SPR registers for tilegx */ > +#define KVM_TILE_RESET_SPR _IO(KVMIO, 0xa8) The KVM way of doing this is typically GET/SET_SPR, i.e. a way to read/write the registers from userspace. This will be required for migration support anyway, I bet. Jan -- Siemens AG, Corporate Technology, CT RTC ITP SES-DE Corporate Competence Center Embedded Linux