From: Johannes Berg <johannes@sipsolutions.net>
To: Geert Uytterhoeven <geert@linux-m68k.org>,
Hajime Tazaki <thehajime@gmail.com>
Cc: linux-um@lists.infradead.org, ricarkol@google.com,
Liam.Howlett@oracle.com, linux-kernel@vger.kernel.org,
Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH RESEND v11 10/13] um: nommu: a work around for MMU dependency to PCI driver
Date: Tue, 23 Sep 2025 19:13:47 +0200 [thread overview]
Message-ID: <23adb61e95275251e459513a03ab7d2bcf1f2e07.camel@sipsolutions.net> (raw)
In-Reply-To: <CAMuHMdWAdhiY=MiG5JtboffSo_=D7TD5vFM6Ui5E8eS_VJiJ=g@mail.gmail.com> (sfid-20250923_174311_655140_04935269)
On Tue, 2025-09-23 at 17:42 +0200, Geert Uytterhoeven wrote:
> >
> > currently, drivers/pci/Kconfig (CONFIG_PCI) marks as depends on MMU,
> > so we cannot select it when CONFIG_MMU=n.
>
> That is a fairly recent change, see commit 8fe743b5eba0abfb ("PCI:
> Add CONFIG_MMU dependency") in v6.16-rc1. As this is not a "hard"
> dependency, perhaps it should be reverted, iff you are willing to take
> care of the casual breakage?
Why though? UML with PCI can't really be a functional thing, only a
testing thing, and testing PCI on !MMU when that is actually impossible
in non-simulation is pointless?
johannes
next prev parent reply other threads:[~2025-09-23 17:13 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-18 7:38 [PATCH RESEND v11 00/13] nommu UML Hajime Tazaki
2025-09-18 7:38 ` [PATCH RESEND v11 01/13] x86/um: nommu: elf loader for fdpic Hajime Tazaki
2025-09-18 7:38 ` [PATCH RESEND v11 02/13] um: decouple MMU specific code from the common part Hajime Tazaki
2025-09-18 7:38 ` [PATCH RESEND v11 03/13] um: nommu: memory handling Hajime Tazaki
2025-09-18 7:38 ` [PATCH RESEND v11 04/13] x86/um: nommu: syscall handling Hajime Tazaki
2025-09-18 7:39 ` [PATCH RESEND v11 05/13] um: nommu: seccomp syscalls hook Hajime Tazaki
2025-09-18 7:39 ` [PATCH RESEND v11 06/13] x86/um: nommu: process/thread handling Hajime Tazaki
2025-09-18 7:39 ` [PATCH RESEND v11 07/13] um: nommu: configure fs register on host syscall invocation Hajime Tazaki
2025-09-18 7:39 ` [PATCH RESEND v11 08/13] x86/um/vdso: nommu: vdso memory update Hajime Tazaki
2025-09-18 7:39 ` [PATCH RESEND v11 09/13] x86/um: nommu: signal handling Hajime Tazaki
2025-09-18 7:39 ` [PATCH RESEND v11 10/13] um: nommu: a work around for MMU dependency to PCI driver Hajime Tazaki
2025-09-18 8:30 ` Johannes Berg
2025-09-19 0:03 ` Hajime Tazaki
2025-09-19 7:24 ` Johannes Berg
2025-09-19 9:32 ` Hajime Tazaki
2025-09-19 9:38 ` Johannes Berg
2025-09-19 9:38 ` Johannes Berg
2025-09-19 9:43 ` Johannes Berg
2025-09-19 23:46 ` Hajime Tazaki
2025-09-22 6:32 ` Johannes Berg
2025-09-23 23:44 ` Hajime Tazaki
2025-09-23 15:42 ` Geert Uytterhoeven
2025-09-23 17:13 ` Johannes Berg [this message]
2025-09-23 23:51 ` Hajime Tazaki
2025-09-24 8:02 ` Geert Uytterhoeven
2025-09-24 11:03 ` Arnd Bergmann
2025-09-24 23:27 ` Hajime Tazaki
2025-09-18 7:39 ` [PATCH RESEND v11 11/13] um: change machine name for uname output Hajime Tazaki
2025-09-18 7:39 ` [PATCH RESEND v11 12/13] um: nommu: add documentation of nommu UML Hajime Tazaki
2025-09-18 7:39 ` [PATCH RESEND v11 13/13] um: nommu: plug nommu code into build system Hajime Tazaki
2025-09-18 10:39 ` [PATCH RESEND v11 00/13] nommu UML Lorenzo Stoakes
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