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From: "Ard Biesheuvel" <ard.biesheuvel@linaro.org>
To: Leif Lindholm <leif@nuviainc.com>
Cc: edk2-devel-groups-io <devel@edk2.groups.io>
Subject: Re: [PATCH v2 0/9] ArmPkg: eradicate and deprecate by set/way cache ops
Date: Thu, 5 Mar 2020 22:40:57 +0100	[thread overview]
Message-ID: <CAKv+Gu-Fh0-spRmVnyNNvn0Nb2dYTAs05v4S6tfJtCrJ28QtMQ@mail.gmail.com> (raw)
In-Reply-To: <20200305162946.GA23627@bivouac.eciton.net>

On Thu, 5 Mar 2020 at 17:29, Leif Lindholm <leif@nuviainc.com> wrote:
>
> On Wed, Mar 04, 2020 at 19:12:37 +0100, Ard Biesheuvel wrote:
> > This is a combination of v1 'ArmPkg: eradicate and deprecate by set/way cache
> > ops' and v1 'ArmPkg/ArmLib: ASSERT() on misuse of set/way ops'
> >
> > As it turns out, there were still some instances of set/way ops left in
> > the core code, in ArmMmuLib to be precise.
> >
> > This series fixes ArmMmuLib to perform the appropriate cache invalidation
> > when populating page tables with the MMU and caches off, allowing us to
> > get rid of the cache clean/disable/enable sequences which are incorrect
> > and pointless at the same time.
> >
> > I have incorporated some ArmLib changes that I posted separately before,
> > with the end result being that all uses pf set/way ops are gone from the
> > EDK2 core code, and the routines themselves will now ASSERT() when used
> > for anything other than managing the caches while the MMU is still off.
> > (Note that BeagleBoard in edk2-platforms still relies on this)
> >
> > Changes since v1[s]:
> > - don't deprecate the set/way ops but make the usable before MMU is enabled
> >   only
> > - use a more elaborate sequence for invalidating the page table entries on
> >   32-bit ARM, to ensure we are compliant with the nooks and crannies of
> >   version 7 of the architecture.
> > - incorporate patch #1, which was still pending on the list, and is related
> >   (its PrePeiCore sibling was already reviewed and merged)
> >
> > Ard Biesheuvel (9):
> >   ArmPlatformPkg/PrePi: replace set/way cache ops with by-VA ones
> >   ArmPkg/ArmMmuLib ARM: remove dummy constructor
> >   ArmPkg/ArmMmuLib ARM: split ArmMmuLibCore.c into core and update code
> >   ArmPkg/ArmMmuLib ARM: cache-invalidate initial page table entries
> >   ArmPkg/ArmMmuLib AARCH64: cache-invalidate initial page table entries
> >   ArmPkg/ArmLib: move set/way helper functions into private header
> >   ArmPkg/ArmLib: clean up library includes
> >   ArmPkg/ArmLib: remove bogus protocol declaration
> >   ArmPkg/ArmLib: ASSERT on set/way cache ops being used with MMU on
>
> Apart from the minor nit pointed out (which you can fix before
> committing) - for the series:
> Reviewed-by: Leif Lindholm <leif@nuviainc.com>
>

Thanks. These are merged now, along with the followup series, and the
only vaguely related cleanups for ARM.

I did spot one other issue on AArch64 though, so I'll send out another
followup patch to address that.

      reply	other threads:[~2020-03-05 21:41 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-04 18:12 [PATCH v2 0/9] ArmPkg: eradicate and deprecate by set/way cache ops Ard Biesheuvel
2020-03-04 18:12 ` [PATCH v2 1/9] ArmPlatformPkg/PrePi: replace set/way cache ops with by-VA ones Ard Biesheuvel
2020-03-05 16:23   ` Leif Lindholm
2020-03-04 18:12 ` [PATCH v2 2/9] ArmPkg/ArmMmuLib ARM: remove dummy constructor Ard Biesheuvel
2020-03-04 18:12 ` [PATCH v2 3/9] ArmPkg/ArmMmuLib ARM: split ArmMmuLibCore.c into core and update code Ard Biesheuvel
2020-03-04 18:12 ` [PATCH v2 4/9] ArmPkg/ArmMmuLib ARM: cache-invalidate initial page table entries Ard Biesheuvel
2020-03-04 18:12 ` [PATCH v2 5/9] ArmPkg/ArmMmuLib AARCH64: " Ard Biesheuvel
2020-03-04 18:12 ` [PATCH v2 6/9] ArmPkg/ArmLib: move set/way helper functions into private header Ard Biesheuvel
2020-03-04 18:12 ` [PATCH v2 7/9] ArmPkg/ArmLib: clean up library includes Ard Biesheuvel
2020-03-04 18:12 ` [PATCH v2 8/9] ArmPkg/ArmLib: remove bogus protocol declaration Ard Biesheuvel
2020-03-04 18:12 ` [PATCH v2 9/9] ArmPkg/ArmLib: ASSERT on set/way cache ops being used with MMU on Ard Biesheuvel
2020-03-05 16:29 ` [PATCH v2 0/9] ArmPkg: eradicate and deprecate by set/way cache ops Leif Lindholm
2020-03-05 21:40   ` Ard Biesheuvel [this message]

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