From patchwork Mon May 25 12:52:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhenyu Ye X-Patchwork-Id: 11568781 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D17FE90 for ; Mon, 25 May 2020 12:53:36 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id A8E212073B for ; Mon, 25 May 2020 12:53:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A8E212073B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 2EEF68E000C; Mon, 25 May 2020 08:53:35 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 29EAB8E0008; Mon, 25 May 2020 08:53:35 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 169B78E000C; Mon, 25 May 2020 08:53:35 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0083.hostedemail.com [216.40.44.83]) by kanga.kvack.org (Postfix) with ESMTP id F27E48E0008 for ; Mon, 25 May 2020 08:53:34 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id BB5EA180AD820 for ; Mon, 25 May 2020 12:53:34 +0000 (UTC) X-FDA: 76855232748.21.money02_1f2b047ae213e X-Spam-Summary: 1,0,0,,d41d8cd98f00b204,yezhenyu2@huawei.com,,RULES_HIT:30054,0,RBL:45.249.212.32:@huawei.com:.lbl8.mailshell.net-62.18.2.100 64.95.201.95,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:24,LUA_SUMMARY:none X-HE-Tag: money02_1f2b047ae213e X-Filterd-Recvd-Size: 3278 Received: from huawei.com (szxga06-in.huawei.com [45.249.212.32]) by imf46.hostedemail.com (Postfix) with ESMTP for ; Mon, 25 May 2020 12:53:34 +0000 (UTC) Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 35318EACA2377E4D5300; Mon, 25 May 2020 20:53:27 +0800 (CST) Received: from DESKTOP-KKJBAGG.china.huawei.com (10.173.220.25) by DGGEMS407-HUB.china.huawei.com (10.3.19.207) with Microsoft SMTP Server id 14.3.487.0; Mon, 25 May 2020 20:53:20 +0800 From: Zhenyu Ye To: , , , , , , , , , , , , , , , , CC: , , , , , , , , , Subject: [PATCH v3 2/6] arm64: Add level-hinted TLB invalidation helper Date: Mon, 25 May 2020 20:52:56 +0800 Message-ID: <20200525125300.794-3-yezhenyu2@huawei.com> X-Mailer: git-send-email 2.22.0.windows.1 In-Reply-To: <20200525125300.794-1-yezhenyu2@huawei.com> References: <20200525125300.794-1-yezhenyu2@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.173.220.25] X-CFilter-Loop: Reflected X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Marc Zyngier Add a level-hinted TLB invalidation helper that only gets used if ARMv8.4-TTL gets detected. Signed-off-by: Marc Zyngier Signed-off-by: Zhenyu Ye Reviewed-by: Catalin Marinas --- arch/arm64/include/asm/tlbflush.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h index bc3949064725..8adbd6fd8489 100644 --- a/arch/arm64/include/asm/tlbflush.h +++ b/arch/arm64/include/asm/tlbflush.h @@ -10,6 +10,7 @@ #ifndef __ASSEMBLY__ +#include #include #include #include @@ -59,6 +60,34 @@ __ta; \ }) +#define TLBI_TTL_MASK GENMASK_ULL(47, 44) + +#define __tlbi_level(op, addr, level) do { \ + u64 arg = addr; \ + \ + if (cpus_have_const_cap(ARM64_HAS_ARMv8_4_TTL) && \ + level) { \ + u64 ttl = level; \ + \ + switch (PAGE_SIZE) { \ + case SZ_4K: \ + ttl |= 1 << 2; \ + break; \ + case SZ_16K: \ + ttl |= 2 << 2; \ + break; \ + case SZ_64K: \ + ttl |= 3 << 2; \ + break; \ + } \ + \ + arg &= ~TLBI_TTL_MASK; \ + arg |= FIELD_PREP(TLBI_TTL_MASK, ttl); \ + } \ + \ + __tlbi(op, arg); \ +} while (0) + /* * TLB Invalidation * ================