From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org E2D5F60767 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752772AbeFFPoN (ORCPT + 25 others); Wed, 6 Jun 2018 11:44:13 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:42236 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752067AbeFFPoL (ORCPT ); Wed, 6 Jun 2018 11:44:11 -0400 Date: Wed, 6 Jun 2018 16:44:42 +0100 From: Will Deacon To: Chintan Pandya Cc: catalin.marinas@arm.com, mark.rutland@arm.com, akpm@linux-foundation.org, toshi.kani@hpe.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v13 2/3] arm64: tlbflush: Introduce __flush_tlb_kernel_pgtable Message-ID: <20180606154442.GF6631@arm.com> References: <1528268481-19299-1-git-send-email-cpandya@codeaurora.org> <1528268481-19299-3-git-send-email-cpandya@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1528268481-19299-3-git-send-email-cpandya@codeaurora.org> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 06, 2018 at 12:31:20PM +0530, Chintan Pandya wrote: > Add an interface to invalidate intermediate page tables > from TLB for kernel. > > Signed-off-by: Chintan Pandya > --- > arch/arm64/include/asm/tlbflush.h | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h > index dfc61d7..a4a1901 100644 > --- a/arch/arm64/include/asm/tlbflush.h > +++ b/arch/arm64/include/asm/tlbflush.h > @@ -218,6 +218,13 @@ static inline void __flush_tlb_pgtable(struct mm_struct *mm, > dsb(ish); > } > > +static inline void __flush_tlb_kernel_pgtable(unsigned long kaddr) > +{ > + unsigned long addr = __TLBI_VADDR(kaddr, 0); > + > + __tlbi(vaae1is, addr); > + dsb(ish); > +} > #endif Acked-by: Will Deacon Will