2024-04-01 12:19:47

by Marc Zyngier

[permalink] [raw]
Subject: [PATCH] PCI: apple: Fix dependency on 16kB pages

While d3e5bab923d3 consolidated the various definitions for page sizes,
it ended up breaking the Apple PCIe driver, which still depends on
ARM64_PAGE_SHIFT. Switch over to HAVE_PAGE_SIZE_16KB to make the driver
selectable again.

Cc: Arnd Bergmann <[email protected]>
Cc: Lorenzo Pieralisi <[email protected]>
Cc: "Krzysztof Wilczyński" <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Bjorn Helgaas <[email protected]>
Fixes: d3e5bab923d3 ("arch: simplify architecture specific page size configuration")
Signed-off-by: Marc Zyngier <[email protected]>
---
drivers/pci/controller/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
index efb5043f106a..fbcf1ff522b8 100644
--- a/drivers/pci/controller/Kconfig
+++ b/drivers/pci/controller/Kconfig
@@ -39,7 +39,7 @@ config PCIE_APPLE
depends on ARCH_APPLE || COMPILE_TEST
depends on OF
depends on PCI_MSI
- depends on ARM64_PAGE_SHIFT = 14 || COMPILE_TEST
+ depends on HAVE_PAGE_SIZE_16KB || COMPILE_TEST
select PCI_HOST_COMMON
help
Say Y here if you want to enable PCIe controller support on Apple
--
2.39.2



2024-04-01 12:23:57

by Arnd Bergmann

[permalink] [raw]
Subject: Re: [PATCH] PCI: apple: Fix dependency on 16kB pages

On Mon, Apr 1, 2024, at 14:19, Marc Zyngier wrote:
> While d3e5bab923d3 consolidated the various definitions for page sizes,
> it ended up breaking the Apple PCIe driver, which still depends on
> ARM64_PAGE_SHIFT. Switch over to HAVE_PAGE_SIZE_16KB to make the driver
> selectable again.
>
> Cc: Arnd Bergmann <[email protected]>
> Cc: Lorenzo Pieralisi <[email protected]>
> Cc: "Krzysztof Wilczyński" <[email protected]>
> Cc: Rob Herring <[email protected]>
> Cc: Bjorn Helgaas <[email protected]>
> Fixes: d3e5bab923d3 ("arch: simplify architecture specific page size
> configuration")
> Signed-off-by: Marc Zyngier <[email protected]>

The dependency only exists in the asahi kernel with commit
db5709e83c11 ("PCI: apple: Add depends on ARM64_PAGE_SHIFT = 14")
and is not present upstream.

Arnd

2024-04-01 12:29:33

by Marc Zyngier

[permalink] [raw]
Subject: Re: [PATCH] PCI: apple: Fix dependency on 16kB pages

On Mon, 01 Apr 2024 13:23:27 +0100,
"Arnd Bergmann" <[email protected]> wrote:
>
> On Mon, Apr 1, 2024, at 14:19, Marc Zyngier wrote:
> > While d3e5bab923d3 consolidated the various definitions for page sizes,
> > it ended up breaking the Apple PCIe driver, which still depends on
> > ARM64_PAGE_SHIFT. Switch over to HAVE_PAGE_SIZE_16KB to make the driver
> > selectable again.
> >
> > Cc: Arnd Bergmann <[email protected]>
> > Cc: Lorenzo Pieralisi <[email protected]>
> > Cc: "Krzysztof Wilczyński" <[email protected]>
> > Cc: Rob Herring <[email protected]>
> > Cc: Bjorn Helgaas <[email protected]>
> > Fixes: d3e5bab923d3 ("arch: simplify architecture specific page size
> > configuration")
> > Signed-off-by: Marc Zyngier <[email protected]>
>
> The dependency only exists in the asahi kernel with commit
> db5709e83c11 ("PCI: apple: Add depends on ARM64_PAGE_SHIFT = 14")
> and is not present upstream.

You are absolutely right, and I should have checked where this
dependency was coming from.

Apologies for the noise.

M.

--
Without deviation from the norm, progress is not possible.