Re: [PATCH v2 0/5] riscv: some svpbmt fixes

From: "Heiko Stübner" <heiko@sntech.de>
To: linux-riscv@lists.infradead.org
Cc: Paul Walmsley <paul.walmsley@sifive.com>,
	linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
	wefu@redhat.com, guoren@kernel.org, mick@ics.forth.gr,
	samuel@sholland.org, cmuellner@linux.com,
	philipp.tomsich@vrull.eu, Christoph Hellwig <hch@lst.de>,
	Palmer Dabbelt <palmer@dabbelt.com>
Subject: Re: [PATCH v2 0/5] riscv: some svpbmt fixes
Date: Fri, 17 Jun 2022 09:13:34 +0200	[thread overview]
Message-ID: <37631570.10thIPus4b@diego> (raw)
In-Reply-To: <mhng-55ae586c-07b7-4e6e-b695-6df8608b87d5@palmer-ri-x1c9>

Hi Palmer,

Am Freitag, 17. Juni 2022, 01:03:32 CEST schrieb Palmer Dabbelt:
> On Thu, 26 May 2022 13:56:41 PDT (-0700), heiko@sntech.de wrote:
> > Some additionals comments and notes from autobuilders received
> > after the series got applied, warranted some changes.
> >
> > So this is a small collection of cleanups for the svpbmt v10 series.
> >
> > changes in v2:
> > - add Guo's Review
> > - add patch dropping the use of function pointers in code
> >   that can run before relocation
> >
> > Heiko Stuebner (5):
> >   riscv: drop cpufeature_apply_feature tracking variable
> >   riscv: Improve description for RISCV_ISA_SVPBMT Kconfig symbol
> >   riscv: make patch-function pointer more generic in
> >     cpu_manufacturer_info struct
> >   riscv: fix dependency for t-head errata
> >   riscv: remove usage of function-pointers from cpufeatures and t-head
> >     errata
> >
> >  arch/riscv/Kconfig               |  9 ++++++--
> >  arch/riscv/Kconfig.erratas       |  1 +
> >  arch/riscv/errata/thead/errata.c | 38 ++++++++++----------------------
> >  arch/riscv/kernel/alternative.c  | 18 +++++++--------
> >  arch/riscv/kernel/cpufeature.c   | 37 +++++++++----------------------
> >  5 files changed, 40 insertions(+), 63 deletions(-)
> 
> IMO only three of these are actually fixes, the rest are cleanups.  I've 
> got ahead and put everything on a branch, with
> 
>     riscv: Improve description for RISCV_ISA_SVPBMT Kconfig symbol
>     riscv: drop cpufeature_apply_feature tracking variable
>     riscv: fix dependency for t-head errata
> 
> first.  Those are on fixes, the whole thing is in for-next.

thanks a lot.

For the fixes I think Nathan's "riscv: Fix ALT_THEAD_PMA's asm parameters" [0]
would also be quite important.

Heiko

[0] https://lore.kernel.org/r/20220518184529.454008-1-nathan@kernel.org