On 30/11/15 20:00, Christoffer Dall wrote: > On Fri, Nov 27, 2015 at 06:49:56PM +0000, Marc Zyngier wrote: >> In order to expose the various EL2 services that are private to >> the hypervisor, add a new hyp.h file. >> >> So far, it only contains mundane things such as section annotation >> and VA manipulation. >> >> Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx> >> --- >> arch/arm64/kvm/hyp/hyp.h | 31 +++++++++++++++++++++++++++++++ >> 1 file changed, 31 insertions(+) >> create mode 100644 arch/arm64/kvm/hyp/hyp.h >> >> diff --git a/arch/arm64/kvm/hyp/hyp.h b/arch/arm64/kvm/hyp/hyp.h >> new file mode 100644 >> index 0000000..dac843e >> --- /dev/null >> +++ b/arch/arm64/kvm/hyp/hyp.h >> @@ -0,0 +1,31 @@ >> +/* >> + * Copyright (C) 2015 - ARM Ltd >> + * Author: Marc Zyngier <marc.zyngier@xxxxxxx> >> + * >> + * This program is free software; you can redistribute it and/or modify >> + * it under the terms of the GNU General Public License version 2 as >> + * published by the Free Software Foundation. >> + * >> + * This program is distributed in the hope that it will be useful, >> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the >> + * GNU General Public License for more details. >> + * >> + * You should have received a copy of the GNU General Public License >> + * along with this program. If not, see <http://www.gnu.org/licenses/>. >> + */ >> + >> +#ifndef __ARM64_KVM_HYP_H__ >> +#define __ARM64_KVM_HYP_H__ >> + >> +#include <linux/compiler.h> >> +#include <linux/kvm_host.h> >> +#include <asm/kvm_mmu.h> >> +#include <asm/sysreg.h> >> + >> +#define __hyp_text __section(.hyp.text) notrace > > why notrace? Because you'd end with calls to mcount in each function prologue, and that doesn't really well for stuff that is not executed in the kernel address space. >> + >> +#define kern_hyp_va(v) (typeof(v))((unsigned long)v & HYP_PAGE_OFFSET_MASK) > > should you have parenthesis around 'v' ? Yup. Thanks, M. -- Jazz is not dead. It just smells funny... -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
