From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eduardo Habkost Subject: [PATCH 13/15] kvm: svm: register virt_disable function on hardware_setup Date: Wed, 5 Nov 2008 17:56:56 -0200 Message-ID: <1225915018-6548-14-git-send-email-ehabkost@redhat.com> References: <1225915018-6548-1-git-send-email-ehabkost@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Andrew Morton , Eduardo Habkost , kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, kexec-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, "Rafael J. Wysocki" , Haren Myneni , Simon Horman , "Eric W. Biederman" , Andrey Borzenkov , mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, Vivek Goyal To: Avi Kivity , Ingo Molnar Return-path: In-Reply-To: <1225915018-6548-1-git-send-email-ehabkost-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kexec-bounces-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org Errors-To: kexec-bounces+glkk-kexec=m.gmane.org-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: kvm.vger.kernel.org Call set_virt_disable_func() on hardware_setup, and clear it on hardware_unsetup. This way kdump and reboot code will be able to disable svm when needed. Signed-off-by: Eduardo Habkost --- arch/x86/kvm/svm.c | 19 +++++++++++++++---- 1 files changed, 15 insertions(+), 4 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 3d330a2..8f9256d 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -27,6 +27,7 @@ #include #include +#include #define __ex(x) __kvm_handle_fault_on_reboot(x) @@ -422,10 +423,16 @@ static __init int svm_hardware_setup(void) void *iopm_va; int r; + r = set_virt_disable_func(__svm_hardware_disable); + if (r) + goto err; + iopm_pages = alloc_pages(GFP_KERNEL, IOPM_ALLOC_ORDER); - if (!iopm_pages) - return -ENOMEM; + if (!iopm_pages) { + r = -ENOMEM; + goto err_clear_virt_disable; + } iopm_va = page_address(iopm_pages); memset(iopm_va, 0xff, PAGE_SIZE * (1 << IOPM_ALLOC_ORDER)); @@ -438,7 +445,7 @@ static __init int svm_hardware_setup(void) for_each_online_cpu(cpu) { r = svm_cpu_init(cpu); if (r) - goto err; + goto err_free_iopm; } svm_features = cpuid_edx(SVM_CPUID_FUNC); @@ -459,9 +466,12 @@ static __init int svm_hardware_setup(void) return 0; -err: +err_free_iopm: __free_pages(iopm_pages, IOPM_ALLOC_ORDER); iopm_base = 0; +err_clear_virt_disable: + clear_virt_disable_func(); +err: return r; } @@ -474,6 +484,7 @@ static __exit void svm_hardware_unsetup(void) __free_pages(pfn_to_page(iopm_base >> PAGE_SHIFT), IOPM_ALLOC_ORDER); iopm_base = 0; + clear_virt_disable_func(); } static void init_seg(struct vmcb_seg *seg) -- 1.5.5.GIT