From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f197.google.com (mail-pf0-f197.google.com [209.85.192.197]) by kanga.kvack.org (Postfix) with ESMTP id B91CB6B0033 for ; Tue, 5 Dec 2017 07:41:19 -0500 (EST) Received: by mail-pf0-f197.google.com with SMTP id v25so52766pfg.14 for ; Tue, 05 Dec 2017 04:41:19 -0800 (PST) Received: from bombadil.infradead.org (bombadil.infradead.org. [65.50.211.133]) by mx.google.com with ESMTPS id p11si35199pfl.325.2017.12.05.04.41.18 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 05 Dec 2017 04:41:18 -0800 (PST) Message-Id: <20171205123820.085253494@infradead.org> Date: Tue, 05 Dec 2017 13:34:49 +0100 From: Peter Zijlstra 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: owner-linux-mm@kvack.org List-ID: 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 __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) -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org