Re: [PATCH] iommu: PGTABLE_LPAE is also for RISCV

[Conor Dooley <conor.dooley@microchip.com>]

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On Tue, May 16, 2023 at 09:02:50AM +0200, Alexandre Ghiti wrote:
> Hi Randy,
> 
> 
> On 3/30/23 18:49, Randy Dunlap wrote:
> > 
> > On 3/30/23 09:34, Robin Murphy wrote:
> > > On 2023-03-30 07:01, Randy Dunlap wrote:
> > > > On riscv64, linux-next-20233030 (and for several days earlier),
> > > > there is a kconfig warning:
> > > > 
> > > > WARNING: unmet direct dependencies detected for IOMMU_IO_PGTABLE_LPAE
> > > >     Depends on [n]: IOMMU_SUPPORT [=y] && (ARM || ARM64 || COMPILE_TEST [=n]) && !GENERIC_ATOMIC64 [=n]
> > > >     Selected by [y]:
> > > >     - IPMMU_VMSA [=y] && IOMMU_SUPPORT [=y] && (ARCH_RENESAS [=y] || COMPILE_TEST [=n]) && !GENERIC_ATOMIC64 [=n]
> > > > 
> > > > and build errors:
> > > > 
> > > > riscv64-linux-ld: drivers/iommu/io-pgtable-arm.o: in function `.L140':
> > > > io-pgtable-arm.c:(.init.text+0x1e8): undefined reference to `alloc_io_pgtable_ops'
> > > > riscv64-linux-ld: drivers/iommu/io-pgtable-arm.o: in function `.L168':
> > > > io-pgtable-arm.c:(.init.text+0xab0): undefined reference to `free_io_pgtable_ops'
> > > > riscv64-linux-ld: drivers/iommu/ipmmu-vmsa.o: in function `.L140':
> > > > ipmmu-vmsa.c:(.text+0xbc4): undefined reference to `free_io_pgtable_ops'
> > > > riscv64-linux-ld: drivers/iommu/ipmmu-vmsa.o: in function `.L0 ':
> > > > ipmmu-vmsa.c:(.text+0x145e): undefined reference to `alloc_io_pgtable_ops'
> > > > 
> > > > Add RISCV as an allowed ARCH dependency to fix these problems.
> > > > 
> > > > Fixes: d286a58bc8f4 ("iommu: Tidy up io-pgtable dependencies")
> > > BTW that doesn't look like the right fix target - this presumably dates back as far as when ARCH_RENESAS was added to RISCV, such that it was possible to start selecting IPMMU_VMSA without COMPILE_TEST?
> > OK, I can go with that. Thanks for your help.
> > 
> 
> Any updates on this fix?

Superseeded by
https://lore.kernel.org/linux-iommu/20230330165817.21920-1-rdunlap@infradead.org/

I guess that never went anywhere?


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