From: "Kani, Toshi" <toshi.kani@hpe.com>
To: "cpandya@codeaurora.org" <cpandya@codeaurora.org>,
"mark.rutland@arm.com" <mark.rutland@arm.com>,
"catalin.marinas@arm.com" <catalin.marinas@arm.com>,
"will.deacon@arm.com" <will.deacon@arm.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"ard.biesheuvel@linaro.org" <ard.biesheuvel@linaro.org>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"takahiro.akashi@linaro.org" <takahiro.akashi@linaro.org>,
"james.morse@arm.com" <james.morse@arm.com>,
"kristina.martsenko@arm.com" <kristina.martsenko@arm.com>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"marc.zyngier@arm.com" <marc.zyngier@arm.com>,
"arnd@arndb.de" <arnd@arndb.de>,
"linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>
Subject: Re: [PATCH v4 1/3] ioremap: Update pgtable free interfaces with addr
Date: Tue, 20 Mar 2018 22:58:18 +0000 [thread overview]
Message-ID: <1521586688.2693.231.camel@hpe.com> (raw)
In-Reply-To: <1521546314-31753-2-git-send-email-cpandya@codeaurora.org>
On Tue, 2018-03-20 at 17:15 +0530, Chintan Pandya wrote:
> This patch ("mm/vmalloc: Add interfaces to free unmapped
> page table") adds following 2 interfaces to free the page
> table in case we implement huge mapping.
>
> pud_free_pmd_page() and pmd_free_pte_page()
>
> Some architectures (like arm64) needs to do proper TLB
> maintanance after updating pagetable entry even in map.
> Why ? Read this,
> https://patchwork.kernel.org/patch/10134581/
>
> Pass 'addr' in these interfaces so that proper TLB ops
> can be performed.
>
> Signed-off-by: Chintan Pandya <cpandya@codeaurora.org>
Thanks for the update. The change looks good.
Reviewed-by: Toshi Kani <toshi.kani@hpe.com>
-Toshi
next prev parent reply other threads:[~2018-03-20 22:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-20 11:45 [PATCH v4 0/3] Fix issues with huge mapping in ioremap for ARM64 Chintan Pandya
2018-03-20 11:45 ` [PATCH v4 1/3] ioremap: Update pgtable free interfaces with addr Chintan Pandya
2018-03-20 22:58 ` Kani, Toshi [this message]
2018-03-20 11:45 ` [PATCH v4 2/3] arm64: Implement page table free interfaces Chintan Pandya
2018-03-26 9:55 ` Mark Rutland
2018-03-27 4:38 ` Chintan Pandya
2018-03-20 11:45 ` [PATCH v4 3/3] Revert "arm64: Enforce BBM for huge IO/VMAP mappings" Chintan Pandya
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