linux-kernel - Re: kismet: WARNING: unmet direct dependencies detected for IOMMU_IO_PGTABLE_LPAE when selected by IPMMU

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Date:   Thu, 22 Dec 2022 17:00:06 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     kernel test robot <lkp@...el.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Cc:     Paul Gazzillo <paul@...zz.com>,
        Necip Fazil Yildiran <fazilyildiran@...il.com>,
        oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Guo Ren <guoren@...nel.org>
Subject: Re: kismet: WARNING: unmet direct dependencies detected for
 IOMMU_IO_PGTABLE_LPAE when selected by IPMMU_VMSA



On 12/21/22 20:49, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   9d2f6060fe4c3b49d0cdc1dce1c99296f33379c8
> commit: 8292493c22c8e28b6e67a01e0f5c6db1cf231eb1 riscv: Kconfig.socs: Add ARCH_RENESAS kconfig option
> date:   6 weeks ago
> config: riscv-kismet-CONFIG_IOMMU_IO_PGTABLE_LPAE-CONFIG_IPMMU_VMSA-0-0
> reproduce:
>         # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8292493c22c8e28b6e67a01e0f5c6db1cf231eb1
>         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>         git fetch --no-tags linus master
>         git checkout 8292493c22c8e28b6e67a01e0f5c6db1cf231eb1
>         # 1. reproduce by kismet
>            # install kmax per https://github.com/paulgazz/kmax/blob/master/README.md
>            kismet --linux-ksrc=linux --selectees CONFIG_IOMMU_IO_PGTABLE_LPAE --selectors CONFIG_IPMMU_VMSA -a=riscv
>         # 2. reproduce by make
>            # save the config file to linux source tree
>            cd linux
>            make ARCH=riscv olddefconfig
> 
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@...el.com>
> 
> kismet warnings: (new ones prefixed by >>)
>>> kismet: WARNING: unmet direct dependencies detected for IOMMU_IO_PGTABLE_LPAE when selected by IPMMU_VMSA
>    .config:4814:warning: symbol value 'ONFIG_ARCH_MMAP_RND_BITS_MI' invalid for ARCH_MMAP_RND_BITS
>    
>    WARNING: unmet direct dependencies detected for IOMMU_IO_PGTABLE_LPAE
>      Depends on [n]: IOMMU_SUPPORT [=y] && (ARM || ARM64 || COMPILE_TEST [=y] && !GENERIC_ATOMIC64 [=y])
>      Selected by [y]:
>      - IPMMU_VMSA [=y] && IOMMU_SUPPORT [=y] && (ARCH_RENESAS [=y] || COMPILE_TEST [=y] && !GENERIC_ATOMIC64 [=y])
> 

Maybe this:

---
 drivers/iommu/Kconfig |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff -- a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -32,7 +32,8 @@ config IOMMU_IO_PGTABLE
 config IOMMU_IO_PGTABLE_LPAE
 	bool "ARMv7/v8 Long Descriptor Format"
 	select IOMMU_IO_PGTABLE
-	depends on ARM || ARM64 || (COMPILE_TEST && !GENERIC_ATOMIC64)
+	depends on ARM || ARM64 || ARCH_RENESAS || \
+		(COMPILE_TEST && !GENERIC_ATOMIC64)
 	help
 	  Enable support for the ARM long descriptor pagetable format.
 	  This allocator supports 4K/2M/1G, 16K/32M and 64K/512M page


or is way off?

-- 
~Randy