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From: Christoph Hellwig <hch@lst.de>
To: Atish Patra <atish.patra@wdc.com>
Cc: linux-kernel@vger.kernel.org, Albert Ou <aou@eecs.berkeley.edu>,
	linux-riscv@lists.infradead.org,
	Palmer Dabbelt <palmer@sifive.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Christoph Hellwig <hch@lst.de>, Anup Patel <Anup.Patel@wdc.com>,
	Andreas Schwab <schwab@linux-m68k.org>
Subject: Re: [PATCH v3 2/3] RISC-V: Issue a tlb page flush if possible
Date: Thu, 22 Aug 2019 03:50:27 +0200	[thread overview]
Message-ID: <20190822015027.GB11922@lst.de> (raw)
In-Reply-To: <20190822004644.25829-3-atish.patra@wdc.com>

On Wed, Aug 21, 2019 at 05:46:43PM -0700, Atish Patra wrote:
> +		if (size <= PAGE_SIZE && size != -1)
> +			local_flush_tlb_page(start);
> +		else
> +			local_flush_tlb_all();

As Andreas pointed out (unsigned long)-1 is actually larger than
PAGE_SIZE, so we don't need the extra check.

  reply	other threads:[~2019-08-22  1:50 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-22  0:46 [PATCH v3 0/3] Optimize tlbflush path Atish Patra
2019-08-22  0:46 ` [PATCH v3 1/3] RISC-V: Issue a local tlbflush if possible Atish Patra
2019-08-22  1:46   ` Christoph Hellwig
2019-08-22  4:01     ` Atish Patra
2019-08-22  4:27       ` hch
2019-08-22  5:39         ` Atish Patra
2019-08-22  0:46 ` [PATCH v3 2/3] RISC-V: Issue a tlb page flush " Atish Patra
2019-08-22  1:50   ` Christoph Hellwig [this message]
2019-08-22  4:02     ` Atish Patra
2019-08-22  0:46 ` [PATCH v3 3/3] RISC-V: Do not invoke SBI call if cpumask is empty Atish Patra
2019-08-22  1:51   ` Christoph Hellwig
2019-08-22  4:23     ` Atish Patra

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