Messages in this thread | | | From | Arnd Bergmann <> | Date | Fri, 15 May 2020 17:41:37 +0200 | Subject | Re: ARM: static kernel in vmalloc space |
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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
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