linux-kernel - Re: [PATCH 0/2] Allow nesting of lazy MMU mode

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Message-ID: <20231013154220.02fb2e6d@yea>
Date:   Fri, 13 Oct 2023 15:42:20 +0200
From:   Erhard Furtner <erhard_f@...lbox.org>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     linux-kernel@...r.kernel.org, linux-sparc@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org,
        Michael Ellerman <mpe@...erman.id.au>,
        David Woodhouse <dwmw2@...radead.org>,
        Juergen Gross <jgross@...e.com>
Subject: Re: [PATCH 0/2] Allow nesting of lazy MMU mode

On Thu, 12 Oct 2023 20:54:13 +0100
"Matthew Wilcox (Oracle)" <willy@...radead.org> wrote:

> Dave Woodhouse reported that we now nest calls to
> arch_enter_lazy_mmu_mode().  That was inadvertent, but in principle we
> should allow it.  On further investigation, Juergen already fixed it
> for Xen, but didn't tell anyone.  Fix it for Sparc & PowerPC too.
> This may or may not help fix the problem that Erhard reported.
> 
> Matthew Wilcox (Oracle) (2):
>   powerpc: Allow nesting of lazy MMU mode
>   sparc: Allow nesting of lazy MMU mode
> 
>  arch/powerpc/include/asm/book3s/64/tlbflush-hash.h | 5 ++---
>  arch/sparc/mm/tlb.c                                | 5 ++---
>  2 files changed, 4 insertions(+), 6 deletions(-)
> 
> -- 
> 2.40.1

Applied the patch on top of v6.6-rc5 but unfortunately it did not fix my reported issue.

Regards,
Erhard