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PCI: Add CONFIG_MMU dependency

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It turns out that there are no platforms that have PCI but don't have an
MMU, so adding a Kconfig dependency on CONFIG_PCI simplifies build testing
kernels for those platforms a lot, and avoids a lot of inadvertent build
regressions.

Add a dependency for CONFIG_PCI and remove all the ones for PCI specific
device drivers that are currently marked not having it.

There are a few platforms that have an optional MMU, but they usually
cannot have PCI at all. The one exception is Coldfire MCF54xx, but this is
mainly for historic reasons, and anyone using those chips should really use
the MMU these days.

Link: https://lore.kernel.org/lkml/a41f1b20-a76c-43d8-8c36-f12744327a54@app.fastmail.com/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> # SCSI
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patch.msgid.link/20250423202215.3315550-1-arnd@kernel.org
This commit is contained in:
Arnd Bergmann 2025-04-23 22:16:32 +02:00 • committed by Bjorn Helgaas
parent a2c6c1c23b
commit 8fe743b5eb
21 changed files with 17 additions and 23 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/accel/qaic/Kconfig
View file

@ -8,7 +8,6 @@ config DRM_ACCEL_QAIC
depends on DRM_ACCEL
depends on PCI && HAS_IOMEM
depends on MHI_BUS
depends on MMU
select CRC32
help
Enables driver for Qualcomm's Cloud AI accelerator PCIe cards that are

2
drivers/firewire/Kconfig
View file

@ -83,7 +83,7 @@ config FIREWIRE_KUNIT_SELF_ID_SEQUENCE_HELPER_TEST
config FIREWIRE_OHCI
tristate "OHCI-1394 controllers"
depends on PCI && FIREWIRE && MMU
depends on PCI && FIREWIRE
help
Enable this driver if you have a FireWire controller based
on the OHCI specification. For all practical purposes, this

2
drivers/gpu/drm/Kconfig
View file

@ -462,7 +462,7 @@ source "drivers/gpu/drm/imagination/Kconfig"
config DRM_HYPERV
tristate "DRM Support for Hyper-V synthetic video device"
depends on DRM && PCI && MMU && HYPERV
depends on DRM && PCI && HYPERV
select DRM_CLIENT_SELECTION
select DRM_KMS_HELPER
select DRM_GEM_SHMEM_HELPER

3
drivers/gpu/drm/amd/amdgpu/Kconfig
View file

@ -2,7 +2,7 @@
config DRM_AMDGPU
tristate "AMD GPU"
depends on DRM && PCI && MMU
depends on DRM && PCI
depends on !UML
select FW_LOADER
select DRM_CLIENT
@ -68,7 +68,6 @@ config DRM_AMDGPU_CIK
config DRM_AMDGPU_USERPTR
bool "Always enable userptr write support"
depends on DRM_AMDGPU
depends on MMU
select HMM_MIRROR
select MMU_NOTIFIER
help

2
drivers/gpu/drm/ast/Kconfig
View file

@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config DRM_AST
tristate "AST server chips"
depends on DRM && PCI && MMU
depends on DRM && PCI
select DRM_CLIENT_SELECTION
select DRM_GEM_SHMEM_HELPER
select DRM_KMS_HELPER

2
drivers/gpu/drm/gma500/Kconfig
View file

@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config DRM_GMA500
tristate "Intel GMA500/600/3600/3650 KMS Framebuffer"
depends on DRM && PCI && X86 && MMU && HAS_IOPORT
depends on DRM && PCI && X86 && HAS_IOPORT
select DRM_CLIENT_SELECTION
select DRM_KMS_HELPER
select FB_IOMEM_HELPERS if DRM_FBDEV_EMULATION

1
drivers/gpu/drm/hisilicon/hibmc/Kconfig
View file

@ -2,7 +2,6 @@
config DRM_HISI_HIBMC
tristate "DRM Support for Hisilicon Hibmc"
depends on DRM && PCI
depends on MMU
select DRM_CLIENT_SELECTION
select DRM_DISPLAY_HELPER
select DRM_DISPLAY_DP_HELPER

2
drivers/gpu/drm/loongson/Kconfig
View file

@ -2,7 +2,7 @@
config DRM_LOONGSON
tristate "DRM support for Loongson Graphics"
depends on DRM && PCI && MMU
depends on DRM && PCI
depends on LOONGARCH || MIPS || COMPILE_TEST
select DRM_CLIENT_SELECTION
select DRM_KMS_HELPER

2
drivers/gpu/drm/mgag200/Kconfig
View file

@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config DRM_MGAG200
tristate "Matrox G200"
depends on DRM && PCI && MMU
depends on DRM && PCI
select DRM_CLIENT_SELECTION
select DRM_GEM_SHMEM_HELPER
select DRM_KMS_HELPER

3
drivers/gpu/drm/nouveau/Kconfig
View file

@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config DRM_NOUVEAU
tristate "Nouveau (NVIDIA) cards"
depends on DRM && PCI && MMU
depends on DRM && PCI
select IOMMU_API
select FW_LOADER
select FW_CACHE if PM_SLEEP
@ -94,7 +94,6 @@ config DRM_NOUVEAU_SVM
bool "(EXPERIMENTAL) Enable SVM (Shared Virtual Memory) support"
depends on DEVICE_PRIVATE
depends on DRM_NOUVEAU
depends on MMU
depends on STAGING
select HMM_MIRROR
select MMU_NOTIFIER

2
drivers/gpu/drm/qxl/Kconfig
View file

@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config DRM_QXL
tristate "QXL virtual GPU"
depends on DRM && PCI && MMU && HAS_IOPORT
depends on DRM && PCI && HAS_IOPORT
select DRM_CLIENT_SELECTION
select DRM_KMS_HELPER
select DRM_TTM

2
drivers/gpu/drm/radeon/Kconfig
View file

@ -2,7 +2,7 @@
config DRM_RADEON
tristate "ATI Radeon"
depends on DRM && PCI && MMU
depends on DRM && PCI
depends on AGP || !AGP
select FW_LOADER
select DRM_CLIENT_SELECTION

2
drivers/gpu/drm/tiny/Kconfig
View file

@ -37,7 +37,7 @@ config DRM_BOCHS
config DRM_CIRRUS_QEMU
tristate "Cirrus driver for QEMU emulated device"
depends on DRM && PCI && MMU
depends on DRM && PCI
select DRM_CLIENT_SELECTION
select DRM_KMS_HELPER
select DRM_GEM_SHMEM_HELPER

2
drivers/gpu/drm/vmwgfx/Kconfig
View file

@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
config DRM_VMWGFX
tristate "DRM driver for VMware Virtual GPU"
depends on DRM && PCI && MMU
depends on DRM && PCI
depends on (X86 && HYPERVISOR_GUEST) || ARM64
select DRM_CLIENT_SELECTION
select DRM_TTM

2
drivers/gpu/drm/xe/Kconfig
View file

@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config DRM_XE
tristate "Intel Xe Graphics"
depends on DRM && PCI && MMU && (m || (y && KUNIT=y))
depends on DRM && PCI && (m || (y && KUNIT=y))
select INTERVAL_TREE
# we need shmfs for the swappable backing store, and in particular
# the shmem_readpage() which depends upon tmpfs

1
drivers/net/ethernet/broadcom/Kconfig
View file

@ -96,7 +96,6 @@ config BNX2
config CNIC
tristate "QLogic CNIC support"
depends on PCI && (IPV6 || IPV6=n)
depends on MMU
select BNX2
select UIO
help

1
drivers/pci/Kconfig
View file

@ -21,6 +21,7 @@ config GENERIC_PCI_IOMAP
menuconfig PCI
bool "PCI support"
depends on HAVE_PCI
depends on MMU
help
This option enables support for the PCI local bus, including
support for PCI-X and the foundations for PCI Express support.

4
drivers/pci/pci.c
View file

@ -4257,7 +4257,7 @@ unsigned long __weak pci_address_to_pio(phys_addr_t address)
#ifndef pci_remap_iospace
int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr)
{
#if defined(PCI_IOBASE) && defined(CONFIG_MMU)
#if defined(PCI_IOBASE)
unsigned long vaddr = (unsigned long)PCI_IOBASE + res->start;
if (!(res->flags & IORESOURCE_IO))
@ -4290,7 +4290,7 @@ EXPORT_SYMBOL(pci_remap_iospace);
*/
void pci_unmap_iospace(struct resource *res)
{
#if defined(PCI_IOBASE) && defined(CONFIG_MMU)
#if defined(PCI_IOBASE)
unsigned long vaddr = (unsigned long)PCI_IOBASE + res->start;
vunmap_range(vaddr, vaddr + resource_size(res));

1
drivers/scsi/bnx2fc/Kconfig
View file

@ -5,7 +5,6 @@ config SCSI_BNX2X_FCOE
depends on (IPV6 || IPV6=n)
depends on LIBFC
depends on LIBFCOE
depends on MMU
select NETDEVICES
select ETHERNET
select NET_VENDOR_BROADCOM

1
drivers/scsi/bnx2i/Kconfig
View file

@ -4,7 +4,6 @@ config SCSI_BNX2_ISCSI
depends on NET
depends on PCI
depends on (IPV6 || IPV6=n)
depends on MMU
select SCSI_ISCSI_ATTRS
select NETDEVICES
select ETHERNET

2
drivers/vfio/pci/Kconfig
View file

@ -1,6 +1,6 @@
# SPDX-License-Identifier: GPL-2.0-only
menu "VFIO support for PCI devices"
depends on PCI && MMU
depends on PCI
config VFIO_PCI_CORE
tristate