From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756661AbdDMKLt (ORCPT ); Thu, 13 Apr 2017 06:11:49 -0400 Received: from mx2.suse.de ([195.135.220.15]:49865 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756484AbdDMKLk (ORCPT ); Thu, 13 Apr 2017 06:11:40 -0400 From: Juergen Gross To: linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org Cc: boris.ostrovsky@oracle.com, Juergen Gross Subject: [PATCH v2 01/11] xen: set cpu capabilities from xen_start_kernel() Date: Thu, 13 Apr 2017 12:11:06 +0200 Message-Id: <20170413101116.723-2-jgross@suse.com> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20170413101116.723-1-jgross@suse.com> References: <20170413101116.723-1-jgross@suse.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There is no need to set the same capabilities for each cpu individually. This can easily be done for all cpus when starting the kernel. Signed-off-by: Juergen Gross --- arch/x86/xen/enlighten_pv.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c index b226f67fb741..6dc922e3848a 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -327,6 +327,12 @@ static void __init xen_init_cpuid_mask(void) cpuid_leaf1_ecx_set_mask = (1 << (X86_FEATURE_MWAIT % 32)); } +static void __init xen_init_capabilities(void) +{ + setup_clear_cpu_cap(X86_BUG_SYSRET_SS_ATTRS); + setup_force_cpu_cap(X86_FEATURE_XENPV); +} + static void xen_set_debugreg(int reg, unsigned long val) { HYPERVISOR_set_debugreg(reg, val); @@ -1318,6 +1324,7 @@ asmlinkage __visible void __init xen_start_kernel(void) xen_init_irq_ops(); xen_init_cpuid_mask(); + xen_init_capabilities(); #ifdef CONFIG_X86_LOCAL_APIC /* @@ -1506,16 +1513,9 @@ static uint32_t __init xen_platform_pv(void) return 0; } -static void xen_set_cpu_features(struct cpuinfo_x86 *c) -{ - clear_cpu_bug(c, X86_BUG_SYSRET_SS_ATTRS); - set_cpu_cap(c, X86_FEATURE_XENPV); -} - const struct hypervisor_x86 x86_hyper_xen_pv = { .name = "Xen PV", .detect = xen_platform_pv, - .set_cpu_features = xen_set_cpu_features, .pin_vcpu = xen_pin_vcpu, }; EXPORT_SYMBOL(x86_hyper_xen_pv); -- 2.12.0