From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752783AbdLEMli (ORCPT ); Tue, 5 Dec 2017 07:41:38 -0500 Received: from bombadil.infradead.org ([65.50.211.133]:54773 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752540AbdLEMlc (ORCPT ); Tue, 5 Dec 2017 07:41:32 -0500 Message-Id: <20171205123820.085253494@infradead.org> User-Agent: quilt/0.63-1 Date: Tue, 05 Dec 2017 13:34:49 +0100 From: Peter Zijlstra To: linux-kernel@vger.kernel.org Cc: x86@kernel.org, Linus Torvalds , Andy Lutomirsky , Peter Zijlstra , Dave Hansen , Borislav Petkov , Greg KH , keescook@google.com, hughd@google.com, Brian Gerst , Josh Poimboeuf , Denys Vlasenko , Rik van Riel , Boris Ostrovsky , Juergen Gross , David Laight , Eduardo Valentin , aliguori@amazon.com, Will Deacon , daniel.gruss@iaik.tugraz.at, Dave Hansen , Ingo Molnar , moritz.lipp@iaik.tugraz.at, linux-mm@kvack.org, Borislav Petkov , michael.schwarz@iaik.tugraz.at, richard.fellner@student.tugraz.at Subject: [PATCH 4/9] x86/mm: Use __flush_tlb_one() for kernel memory References: <20171205123444.990868007@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline; filename=peterz-tlb-flush_kernel_range.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org __flush_tlb_single() is for user mappings, __flush_tlb_one() for kernel mappings. Signed-off-by: Peter Zijlstra (Intel) --- arch/x86/mm/tlb.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -605,9 +605,7 @@ static void do_kernel_range_flush(void * /* flush range by one by one 'invlpg' */ for (addr = f->start; addr < f->end; addr += PAGE_SIZE) - __flush_tlb_single(addr); - - invalidate_pcid_other(); + __flush_tlb_one(addr); } void flush_tlb_kernel_range(unsigned long start, unsigned long end)