From: Arnd Bergmann <arnd@kernel.org>
To: Zhen Lei <thunder.leizhen@huawei.com>
Cc: devicetree <devicetree@vger.kernel.org>,
Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Will Deacon <will.deacon@arm.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Haojian Zhuang <haojian.zhuang@gmail.com>,
Rob Herring <robh+dt@kernel.org>, Wei Xu <xuwei5@hisilicon.com>,
Russell King <rmk+kernel@arm.linux.org.uk>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v5 1/4] ARM: LPAE: Use phys_addr_t instead of unsigned long in outercache hooks
Date: Thu, 28 Jan 2021 15:29:12 +0100 [thread overview]
Message-ID: <CAK8P3a09ypz4HjJUofFaV2NZd_3=0woC6es6w+E1_cvE=9K4UQ@mail.gmail.com> (raw)
In-Reply-To: <20210116032740.873-2-thunder.leizhen@huawei.com>
On Sat, Jan 16, 2021 at 4:27 AM Zhen Lei <thunder.leizhen@huawei.com> wrote:
>
> The outercache of some Hisilicon SOCs support physical addresses wider
> than 32-bits. The unsigned long datatype is not sufficient for mapping
> physical addresses >= 4GB. The commit ad6b9c9d78b9 ("ARM: 6671/1: LPAE:
> use phys_addr_t instead of unsigned long in outercache functions") has
> already modified the outercache functions. But the parameters of the
> outercache hooks are not changed. This patch use phys_addr_t instead of
> unsigned long in outercache hooks: inv_range, clean_range, flush_range.
>
> To ensure the outercache that does not support LPAE works properly, do
> cast phys_addr_t to unsigned long by adding a group of temporary
> variables. For example:
> -static void l2c220_inv_range(unsigned long start, unsigned long end)
> +static void l2c220_inv_range(phys_addr_t pa_start, phys_addr_t pa_end)
> {
> + unsigned long start = pa_start;
> + unsigned long end = pa_end;
>
> Note that the outercache functions have been doing this cast before this
> patch. So now, the cast is just moved into the outercache hook functions.
>
> No functional change.
>
> Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-01-28 14:30 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-16 3:27 [PATCH v5 0/4] ARM: Add support for Hisilicon Kunpeng L3 cache controller Zhen Lei
2021-01-16 3:27 ` [PATCH v5 1/4] ARM: LPAE: Use phys_addr_t instead of unsigned long in outercache hooks Zhen Lei
2021-01-28 14:29 ` Arnd Bergmann [this message]
2021-01-16 3:27 ` [PATCH v5 2/4] ARM: hisi: add support for Kunpeng50x SoC Zhen Lei
2021-01-28 14:28 ` Arnd Bergmann
2021-01-29 8:09 ` Leizhen (ThunderTown)
2021-01-16 3:27 ` [PATCH v5 3/4] dt-bindings: arm: hisilicon: Add binding for Kunpeng L3 cache controller Zhen Lei
2021-01-28 14:25 ` Arnd Bergmann
2021-01-16 3:27 ` [PATCH v5 4/4] ARM: Add support for Hisilicon " Zhen Lei
2021-01-28 14:24 ` Arnd Bergmann
2021-01-29 7:23 ` Leizhen (ThunderTown)
2021-01-29 8:16 ` Arnd Bergmann
2021-01-29 10:26 ` Arnd Bergmann
2021-01-29 10:33 ` Russell King - ARM Linux admin
2021-01-29 10:53 ` Arnd Bergmann
2021-01-29 11:11 ` Russell King - ARM Linux admin
2021-01-30 2:51 ` Leizhen (ThunderTown)
2021-01-29 13:54 ` Leizhen (ThunderTown)
2021-01-30 3:00 ` Leizhen (ThunderTown)
2021-01-29 13:33 ` Leizhen (ThunderTown)
2021-01-29 10:12 ` Russell King - ARM Linux admin
2021-01-29 13:33 ` Leizhen (ThunderTown)
2021-01-28 1:30 ` [PATCH v5 0/4] " Leizhen (ThunderTown)
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAK8P3a09ypz4HjJUofFaV2NZd_3=0woC6es6w+E1_cvE=9K4UQ@mail.gmail.com' \
--to=arnd@kernel.org \
--cc=arnd@arndb.de \
--cc=devicetree@vger.kernel.org \
--cc=gregkh@linuxfoundation.org \
--cc=haojian.zhuang@gmail.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=rmk+kernel@arm.linux.org.uk \
--cc=robh+dt@kernel.org \
--cc=thunder.leizhen@huawei.com \
--cc=will.deacon@arm.com \
--cc=xuwei5@hisilicon.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).