From: Arnd Bergmann <arnd@arndb.de>
To: Russell King - ARM Linux admin <linux@armlinux.org.uk>
Cc: afzal mohammed <afzal.mohd.ma@gmail.com>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: ARM: static kernel in vmalloc space
Date: Fri, 15 May 2020 17:41:37 +0200 [thread overview]
Message-ID: <CAK8P3a1d-9B86uXxkZnDGf7u-2Vf9fCrUgWQ9HGNEcf3--Yg5w@mail.gmail.com> (raw)
In-Reply-To: <20200514234013.GQ1551@shell.armlinux.org.uk>
On Fri, May 15, 2020 at 1:40 AM Russell King - ARM Linux admin
<linux@armlinux.org.uk> wrote:
> On Thu, May 14, 2020 at 11:12:01PM +0200, Arnd Bergmann wrote:
> > On Thu, May 14, 2020 at 6:25 PM Russell King - ARM Linux admin
> > <linux@armlinux.org.uk> wrote:
> > > On Thu, May 14, 2020 at 02:41:11PM +0200, Arnd Bergmann wrote:
> > > > On Thu, May 14, 2020 at 1:18 PM afzal mohammed <afzal.mohd.ma@gmail.com> wrote:
> > I expected the non-aliasing VIPT caches to work the same as PIPT, can
> > you clarify if there is something to be aware of for those? I see that some
> > ARMv8 chips and most ARMv6 chips (not OMAP2 and Realview) are
> > of that kind, and at we clearly don't want to break running on ARMv8 at
> > least.
>
> There are some aliasing VIPT implementations on ARMv6, but I don't
> remember how common.
I thought it was only realview-pb and omap2, but it seems there
are more, at least ast2500 is an important example.
I could not find information about integrator-cp and picoxcell.
For reference, this is a list of the arm11 chips we currently support,
with the aliasing dcache ones marked '*':
* ast2500: armv6k, arm1176, ??KB aliasing VIPT
bcm2835: armv6k, arm1176, 16KB non-aliasing VIPT
cns3xxx: armv6k, arm11mpcore, 32kb PIPT
imx3: armv6, arm1136r0, 16kb non-aliasing VIPT
integrator CM1136JF-S core module: arm1136r?, 16kb non-aliasing VIPT
? integrator CTB36 core tile: arm1136r?, ???
ox820: armv6k, arm11mpcore, ??KB PIPT
* omap2: armv6, arm1136r0, 32kb aliasing VIPT
? picoxcell: armv6k, arm11??
* realview-pb1176: armv6k, arm1176, 32kb aliasing VIPT
realview-eb with 1176 core tile: armv6k, 16kb non-aliasing VIPT
realview-eb with 11mpcore core tile: armv6k, 32kb PIPT
s3c64xx: armv6k, arm1176, 16kb non-aliasing VIPT
wm8750: armv6k, arm1176: 16kb non-aliasing VIPT
Arnd
next prev parent reply other threads:[~2020-05-15 15:41 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-31 9:32 [PATCH 0/3] Highmem support for 32-bit RISC-V Eric Lin
2020-03-31 9:32 ` [PATCH 1/3] riscv/mm: Add pkmap region and CONFIG_HIGHMEM Eric Lin
2020-03-31 9:32 ` [PATCH 2/3] riscv/mm: Implement kmap() and kmap_atomic() Eric Lin
2020-03-31 9:32 ` [PATCH 3/3] riscv/mm: Add pkmap in print_vm_layout() Eric Lin
2020-04-02 9:31 ` [PATCH 0/3] Highmem support for 32-bit RISC-V Arnd Bergmann
2020-04-08 3:51 ` Alan Kao
2020-04-08 14:40 ` Arnd Bergmann
2020-04-14 15:17 ` afzal mohammed
2020-04-14 19:29 ` Arnd Bergmann
2020-04-15 13:54 ` afzal mohammed
2020-05-03 14:50 ` afzal mohammed
2020-05-03 20:20 ` Arnd Bergmann
2020-05-04 9:10 ` afzal mohammed
2020-05-04 11:27 ` Arnd Bergmann
2020-05-11 14:21 ` ARM: static kernel in vmalloc space (was Re: [PATCH 0/3] Highmem support for 32-bit RISC-V) afzal mohammed
2020-05-11 15:29 ` Arnd Bergmann
2020-05-12 10:47 ` ARM: static kernel in vmalloc space afzal mohammed
2020-05-12 19:49 ` Arnd Bergmann
2020-05-14 11:17 ` afzal mohammed
2020-05-14 12:41 ` Arnd Bergmann
2020-05-14 13:35 ` afzal mohammed
2020-05-14 14:44 ` afzal mohammed
2020-05-14 15:32 ` Arnd Bergmann
2020-05-16 6:06 ` afzal mohammed
2020-05-16 7:35 ` Arnd Bergmann
2020-06-07 12:59 ` ARM: vmsplit 4g/4g afzal mohammed
2020-06-07 16:11 ` Russell King - ARM Linux admin
2020-06-08 11:09 ` afzal mohammed
2020-06-10 10:10 ` Linus Walleij
2020-06-12 10:25 ` afzal mohammed
2020-06-15 9:11 ` Linus Walleij
2020-06-15 10:01 ` afzal mohammed
2020-06-07 19:26 ` Arnd Bergmann
2020-06-08 11:18 ` afzal mohammed
2020-06-08 14:43 ` Arnd Bergmann
2020-06-08 15:17 ` afzal mohammed
2020-06-09 12:15 ` afzal mohammed
2020-06-09 14:22 ` Arnd Bergmann
2020-05-14 16:25 ` ARM: static kernel in vmalloc space Russell King - ARM Linux admin
2020-05-14 21:12 ` Arnd Bergmann
2020-05-14 23:40 ` Russell King - ARM Linux admin
2020-05-15 15:41 ` Arnd Bergmann [this message]
2020-07-30 9:33 ` Linus Walleij
2020-07-30 10:17 ` Arnd Bergmann
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