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From: Chintan Pandya <cpandya@codeaurora.org>
To: Catalin Marinas <catalin.marinas@arm.com>
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
Subject: Re: [PATCH v8 2/4] arm64: tlbflush: Introduce __flush_tlb_kernel_pgtable
Date: Fri, 27 Apr 2018 18:00:22 +0530	[thread overview]
Message-ID: <26d3696d-a298-fe1b-c686-0f12ea94d5a6@codeaurora.org> (raw)
In-Reply-To: <20180427102900.4e63lo4eksk23vtn@armageddon.cambridge.arm.com>



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 <cpandya@codeaurora.org>
>> ---
>>   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

  reply	other threads:[~2018-04-27 12:30 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-03  8:00 [PATCH v8 0/4] Fix issues with huge mapping in ioremap for ARM64 Chintan Pandya
2018-04-03  8:00 ` [PATCH v8 1/4] ioremap: Update pgtable free interfaces with addr Chintan Pandya
2018-04-03  8:00 ` [PATCH v8 2/4] arm64: tlbflush: Introduce __flush_tlb_kernel_pgtable Chintan Pandya
2018-04-27 10:29   ` Catalin Marinas
2018-04-27 12:30     ` Chintan Pandya [this message]
2018-04-03  8:00 ` [PATCH v8 3/4] arm64: Implement page table free interfaces Chintan Pandya
2018-04-03  8:00 ` [PATCH v8 4/4] Revert "arm64: Enforce BBM for huge IO/VMAP mappings" Chintan Pandya
2018-04-03  8:43 ` [PATCH v8 0/4] Fix issues with huge mapping in ioremap for ARM64 Marc Zyngier
2018-04-03 11:55   ` Chintan Pandya
2018-04-05  9:09     ` Chintan Pandya
2018-04-17 10:25 ` Chintan Pandya
2018-04-27 10:27   ` Catalin Marinas

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