From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AB8JxZoAXPS+IsbYtpL2IL+BkhI7FGXw0L6S8J1Mp1sJ74hCknsIclgPscALDd3rnSxxwRoSVUg1 ARC-Seal: i=1; a=rsa-sha256; t=1524832232; cv=none; d=google.com; s=arc-20160816; b=JdYhTwdoBlCEJNI/BHtwx63k2wHdjBUiCBtYqzm/s6Atma+yN+tlDKPtf0tF3hjbMD gYGfuzklbZ2jXawHbwsbgohsmtdfysxNkwcPb2+b4OijfgMQymg6XCMogJ1/IzrHkvVl MPfH84WchLXEb+kZ+fAHxvNps935mwVEch/27jZibfGm145NHtX9P7O8ufhptXG26QfL V4oA41IRkBvziUtHdG0Sfw1M7IWo7owC9+MJ/2JgOsxSe3Onxo2G8Yec6CdWvBpgBHCt VgctSyerfdz0LCF1Yb64q96Qf7XhzrWMW75xY71uj93BFxV3mroxHYv06ArxYeUnEZsj LmTw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:content-language:in-reply-to:mime-version :user-agent:date:message-id:from:references:cc:to:subject :dmarc-filter:dkim-signature:dkim-signature :arc-authentication-results; bh=gaMfdUArnvWO7+SOnsRpOZo00oud7eGlEdVLaaYNw90=; b=qmkAiNqVJZqHijN54Lnq+ya0Hm8MSpiQvN2rO5HMgIY88xBpkPpANApjPzCbArJb8M QhQlmiVF+F2tkrJcLtvZMT2lgPqkwvt2k6bDG1If+PpmCV2Ci9Q8bbIVsV2SIFV+SvVr WfGo+zpRi7E7qlG5N6ENJGfsWLBonmlyag3Cjkf209l1OmviOD8fvGL1lv7BTKgyw20B eMIjqJvHS3Lof9aawOKcYvM8+uX9SGEoF8SQGP1MVv4yBu1DOhouPKm2CYgnV9P4hLEC zXx5zMNXXDvUDj3qlFt80S/aWXHIoaIVqUyt9lMOT/vMMz93brIIB7Crs94tzRmnLZLg Q5XA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@codeaurora.org header.s=default header.b=UNO30LRf; dkim=pass header.i=@codeaurora.org header.s=default header.b=eHS9sCUD; spf=pass (google.com: domain of cpandya@codeaurora.org designates 198.145.29.96 as permitted sender) smtp.mailfrom=cpandya@codeaurora.org Authentication-Results: mx.google.com; dkim=pass header.i=@codeaurora.org header.s=default header.b=UNO30LRf; dkim=pass header.i=@codeaurora.org header.s=default header.b=eHS9sCUD; spf=pass (google.com: domain of cpandya@codeaurora.org designates 198.145.29.96 as permitted sender) smtp.mailfrom=cpandya@codeaurora.org DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org E5CB66034E Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=cpandya@codeaurora.org Subject: Re: [PATCH v8 2/4] arm64: tlbflush: Introduce __flush_tlb_kernel_pgtable To: Catalin Marinas Cc: will.deacon@arm.com, mark.rutland@arm.com, toshi.kani@hpe.com, linux-arch@vger.kernel.org, arnd@arndb.de, ard.biesheuvel@linaro.org, marc.zyngier@arm.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, kristina.martsenko@arm.com, takahiro.akashi@linaro.org, james.morse@arm.com, tglx@linutronix.de, akpm@linux-foundation.org, linux-arm-kernel@lists.infradead.org References: <1522742446-5084-1-git-send-email-cpandya@codeaurora.org> <1522742446-5084-3-git-send-email-cpandya@codeaurora.org> <20180427102900.4e63lo4eksk23vtn@armageddon.cambridge.arm.com> From: Chintan Pandya Message-ID: <26d3696d-a298-fe1b-c686-0f12ea94d5a6@codeaurora.org> Date: Fri, 27 Apr 2018 18:00:22 +0530 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <20180427102900.4e63lo4eksk23vtn@armageddon.cambridge.arm.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1596711273338425981?= X-GMAIL-MSGID: =?utf-8?q?1598902483090004518?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On 4/27/2018 3:59 PM, Catalin Marinas wrote: > On Tue, Apr 03, 2018 at 01:30:44PM +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 | 6 ++++++ >> 1 file changed, 6 insertions(+) >> >> diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h >> index 9e82dd7..6a4816d 100644 >> --- a/arch/arm64/include/asm/tlbflush.h >> +++ b/arch/arm64/include/asm/tlbflush.h >> @@ -209,6 +209,12 @@ static inline void __flush_tlb_pgtable(struct mm_struct *mm, >> dsb(ish); >> } >> >> +static inline void __flush_tlb_kernel_pgtable(unsigned long addr) >> +{ >> + addr >>= 12; >> + __tlbi(vaae1is, addr); >> + dsb(ish); >> +} >> #endif > > Please use __TLBI_VADDR here as it does some additional masking. > Sure. Chintan -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project