Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752169AbbGIHtW (ORCPT ); Thu, 9 Jul 2015 03:49:22 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34255 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750843AbbGIHtN (ORCPT ); Thu, 9 Jul 2015 03:49:13 -0400 From: Thomas Huth To: "Michael S. Tsirkin" , kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, kvm-ppc@vger.kernel.org, virtualization@lists.linux-foundation.org, Greg Kurz Cc: linux-arm-kernel@lists.infradead.org, Gleb Natapov , Paolo Bonzini , Christoffer Dall , Marc Zyngier , Alexander Graf , Paul Mackerras , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, kraxel@redhat.com, Cornelia Huck , Linus Torvalds Subject: [PATCH] KVM: Add Kconfig option to signal cross-endian guests Date: Thu, 9 Jul 2015 09:49:05 +0200 Message-Id: <1436428145-29823-1-git-send-email-thuth@redhat.com> In-Reply-To: <20150707195012-mutt-send-email-mst@redhat.com> References: <20150707195012-mutt-send-email-mst@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2996 Lines: 93 The option for supporting cross-endianness legacy guests in the vhost and tun code should only be available on systems that support cross-endian guests. Signed-off-by: Thomas Huth --- arch/arm/kvm/Kconfig | 1 + arch/arm64/kvm/Kconfig | 1 + arch/powerpc/kvm/Kconfig | 1 + drivers/net/Kconfig | 1 + drivers/vhost/Kconfig | 1 + virt/kvm/Kconfig | 3 +++ 6 files changed, 8 insertions(+) diff --git a/arch/arm/kvm/Kconfig b/arch/arm/kvm/Kconfig index bfb915d..9d8f363 100644 --- a/arch/arm/kvm/Kconfig +++ b/arch/arm/kvm/Kconfig @@ -31,6 +31,7 @@ config KVM select KVM_VFIO select HAVE_KVM_EVENTFD select HAVE_KVM_IRQFD + select KVM_CROSS_ENDIAN_GUESTS depends on ARM_VIRT_EXT && ARM_LPAE && ARM_ARCH_TIMER ---help--- Support hosting virtualized guest machines. diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index bfffe8f..9af39fe 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -31,6 +31,7 @@ config KVM select KVM_VFIO select HAVE_KVM_EVENTFD select HAVE_KVM_IRQFD + select KVM_CROSS_ENDIAN_GUESTS ---help--- Support hosting virtualized guest machines. diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig index 3caec2c..e028710 100644 --- a/arch/powerpc/kvm/Kconfig +++ b/arch/powerpc/kvm/Kconfig @@ -79,6 +79,7 @@ config KVM_BOOK3S_64_HV select KVM_BOOK3S_HV_POSSIBLE select MMU_NOTIFIER select CMA + select KVM_CROSS_ENDIAN_GUESTS ---help--- Support running unmodified book3s_64 guest kernels in virtual machines on POWER7 and PPC970 processors that have diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index c18f9e6..0c4ce47 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -261,6 +261,7 @@ config TUN config TUN_VNET_CROSS_LE bool "Support for cross-endian vnet headers on little-endian kernels" default n + depends on KVM_CROSS_ENDIAN_GUESTS ---help--- This option allows TUN/TAP and MACVTAP device drivers in a little-endian kernel to parse vnet headers that come from a diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig index 533eaf0..4d8ae6b 100644 --- a/drivers/vhost/Kconfig +++ b/drivers/vhost/Kconfig @@ -35,6 +35,7 @@ config VHOST config VHOST_CROSS_ENDIAN_LEGACY bool "Cross-endian support for vhost" + depends on KVM_CROSS_ENDIAN_GUESTS default n ---help--- This option allows vhost to support guests with a different byte diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig index e2c876d..cc7b28a 100644 --- a/virt/kvm/Kconfig +++ b/virt/kvm/Kconfig @@ -47,3 +47,6 @@ config KVM_GENERIC_DIRTYLOG_READ_PROTECT config KVM_COMPAT def_bool y depends on COMPAT && !S390 + +config KVM_CROSS_ENDIAN_GUESTS + bool -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/