From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoffer Dall Subject: Re: [PATCH 04/10] arm64: KVM: PTE/PMD S2 XN bit definition Date: Mon, 16 Oct 2017 22:07:57 +0200 Message-ID: <20171016200757.GG1845@lvm> References: <20171009152032.27804-1-marc.zyngier@arm.com> <20171009152032.27804-5-marc.zyngier@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Christoffer Dall , Catalin Marinas , Will Deacon , linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu To: Marc Zyngier Return-path: Received: from mail-wm0-f42.google.com ([74.125.82.42]:51998 "EHLO mail-wm0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756380AbdJPUIA (ORCPT ); Mon, 16 Oct 2017 16:08:00 -0400 Received: by mail-wm0-f42.google.com with SMTP id f4so6310438wme.0 for ; Mon, 16 Oct 2017 13:08:00 -0700 (PDT) Content-Disposition: inline In-Reply-To: <20171009152032.27804-5-marc.zyngier@arm.com> Sender: kvm-owner@vger.kernel.org List-ID: On Mon, Oct 09, 2017 at 04:20:26PM +0100, Marc Zyngier wrote: > As we're about to make S2 page-tables eXecute Never by default, > add the required bits for both PMDs and PTEs. > > Signed-off-by: Marc Zyngier Reviewed-by: Christoffer Dall > --- > arch/arm64/include/asm/pgtable-hwdef.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h > index eb0c2bd90de9..af035331fb09 100644 > --- a/arch/arm64/include/asm/pgtable-hwdef.h > +++ b/arch/arm64/include/asm/pgtable-hwdef.h > @@ -177,9 +177,11 @@ > */ > #define PTE_S2_RDONLY (_AT(pteval_t, 1) << 6) /* HAP[2:1] */ > #define PTE_S2_RDWR (_AT(pteval_t, 3) << 6) /* HAP[2:1] */ > +#define PTE_S2_XN (_AT(pteval_t, 2) << 53) /* XN[1:0] */ > > #define PMD_S2_RDONLY (_AT(pmdval_t, 1) << 6) /* HAP[2:1] */ > #define PMD_S2_RDWR (_AT(pmdval_t, 3) << 6) /* HAP[2:1] */ > +#define PMD_S2_XN (_AT(pmdval_t, 2) << 53) /* XN[1:0] */ > > /* > * Memory Attribute override for Stage-2 (MemAttr[3:0]) > -- > 2.14.1 >