* [PATCH] [v2] PCI: add CONFIG_MMU dependency
@ 2025-04-23 20:16 Arnd Bergmann
2025-04-23 20:43 ` Bjorn Helgaas
0 siblings, 1 reply; 2+ messages in thread
From: Arnd Bergmann @ 2025-04-23 20:16 UTC (permalink / raw)
To: Bjorn Helgaas
Cc: Arnd Bergmann, Martin K . Petersen, Alex Deucher,
Thomas Zimmermann, David Airlie, Simona Vetter,
Geert Uytterhoeven, dri-devel, linux-kernel, netdev, linux-pci,
linux-scsi, kvm
From: Arnd Bergmann <arnd@arndb.de>
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/
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> # SCSI
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
v2: update changelog text
Bjorn, can you take this through the PCI tree? I thought about splitting
it up by subsystem, but it's really one thing that I'm doing here, and
doing it in one bit makes more sense to me.
---
drivers/accel/qaic/Kconfig | 1 -
drivers/firewire/Kconfig | 2 +-
drivers/gpu/drm/Kconfig | 2 +-
drivers/gpu/drm/amd/amdgpu/Kconfig | 3 +--
drivers/gpu/drm/ast/Kconfig | 2 +-
drivers/gpu/drm/gma500/Kconfig | 2 +-
drivers/gpu/drm/hisilicon/hibmc/Kconfig | 1 -
drivers/gpu/drm/loongson/Kconfig | 2 +-
drivers/gpu/drm/mgag200/Kconfig | 2 +-
drivers/gpu/drm/nouveau/Kconfig | 3 +--
drivers/gpu/drm/qxl/Kconfig | 2 +-
drivers/gpu/drm/radeon/Kconfig | 2 +-
drivers/gpu/drm/tiny/Kconfig | 2 +-
drivers/gpu/drm/vmwgfx/Kconfig | 2 +-
drivers/gpu/drm/xe/Kconfig | 2 +-
drivers/net/ethernet/broadcom/Kconfig | 1 -
drivers/pci/Kconfig | 1 +
drivers/pci/pci.c | 4 ++--
drivers/scsi/bnx2fc/Kconfig | 1 -
drivers/scsi/bnx2i/Kconfig | 1 -
drivers/vfio/pci/Kconfig | 2 +-
21 files changed, 17 insertions(+), 23 deletions(-)
diff --git a/drivers/accel/qaic/Kconfig b/drivers/accel/qaic/Kconfig
index a9f866230058..5e405a19c157 100644
--- a/drivers/accel/qaic/Kconfig
+++ b/drivers/accel/qaic/Kconfig
@@ -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
diff --git a/drivers/firewire/Kconfig b/drivers/firewire/Kconfig
index 905c82e26ce7..a5f5e250223a 100644
--- a/drivers/firewire/Kconfig
+++ b/drivers/firewire/Kconfig
@@ -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
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 89d00265d578..831bd384f1fd 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -393,7 +393,7 @@ 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
diff --git a/drivers/gpu/drm/amd/amdgpu/Kconfig b/drivers/gpu/drm/amd/amdgpu/Kconfig
index 7b95221d2f3d..64e603f971b8 100644
--- a/drivers/gpu/drm/amd/amdgpu/Kconfig
+++ b/drivers/gpu/drm/amd/amdgpu/Kconfig
@@ -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
diff --git a/drivers/gpu/drm/ast/Kconfig b/drivers/gpu/drm/ast/Kconfig
index da0663542e8a..242fbccdf844 100644
--- a/drivers/gpu/drm/ast/Kconfig
+++ b/drivers/gpu/drm/ast/Kconfig
@@ -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
diff --git a/drivers/gpu/drm/gma500/Kconfig b/drivers/gpu/drm/gma500/Kconfig
index 1613e51eff2d..e4c80e1a6da5 100644
--- a/drivers/gpu/drm/gma500/Kconfig
+++ b/drivers/gpu/drm/gma500/Kconfig
@@ -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
depends on ACPI_VIDEO || !ACPI
depends on I2C
diff --git a/drivers/gpu/drm/hisilicon/hibmc/Kconfig b/drivers/gpu/drm/hisilicon/hibmc/Kconfig
index 98d77d74999d..d1f3f5793f34 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/Kconfig
+++ b/drivers/gpu/drm/hisilicon/hibmc/Kconfig
@@ -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
diff --git a/drivers/gpu/drm/loongson/Kconfig b/drivers/gpu/drm/loongson/Kconfig
index 552edfec7afb..d739d51cf54c 100644
--- a/drivers/gpu/drm/loongson/Kconfig
+++ b/drivers/gpu/drm/loongson/Kconfig
@@ -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
diff --git a/drivers/gpu/drm/mgag200/Kconfig b/drivers/gpu/drm/mgag200/Kconfig
index 412dcbea0e2d..a962ae564a75 100644
--- a/drivers/gpu/drm/mgag200/Kconfig
+++ b/drivers/gpu/drm/mgag200/Kconfig
@@ -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
diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
index 9ba89b35d1a2..4fae780f7d78 100644
--- a/drivers/gpu/drm/nouveau/Kconfig
+++ b/drivers/gpu/drm/nouveau/Kconfig
@@ -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
depends on (ACPI_VIDEO && ACPI_WMI && MXM_WMI) || !(ACPI && X86)
depends on BACKLIGHT_CLASS_DEVICE
select IOMMU_API
@@ -86,7 +86,6 @@ 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
diff --git a/drivers/gpu/drm/qxl/Kconfig b/drivers/gpu/drm/qxl/Kconfig
index 69427eb8bed2..d8f24bcae34b 100644
--- a/drivers/gpu/drm/qxl/Kconfig
+++ b/drivers/gpu/drm/qxl/Kconfig
@@ -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
diff --git a/drivers/gpu/drm/radeon/Kconfig b/drivers/gpu/drm/radeon/Kconfig
index f51bace9555d..c479f0c0dd5c 100644
--- a/drivers/gpu/drm/radeon/Kconfig
+++ b/drivers/gpu/drm/radeon/Kconfig
@@ -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
diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig
index 95c1457d7730..c50186a65464 100644
--- a/drivers/gpu/drm/tiny/Kconfig
+++ b/drivers/gpu/drm/tiny/Kconfig
@@ -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
diff --git a/drivers/gpu/drm/vmwgfx/Kconfig b/drivers/gpu/drm/vmwgfx/Kconfig
index 6c3c2922ae8b..aab646b91ca9 100644
--- a/drivers/gpu/drm/vmwgfx/Kconfig
+++ b/drivers/gpu/drm/vmwgfx/Kconfig
@@ -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
diff --git a/drivers/gpu/drm/xe/Kconfig b/drivers/gpu/drm/xe/Kconfig
index dd256b355613..bb3f34a29f4e 100644
--- a/drivers/gpu/drm/xe/Kconfig
+++ b/drivers/gpu/drm/xe/Kconfig
@@ -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))
depends on INTEL_VSEC
select INTERVAL_TREE
# we need shmfs for the swappable backing store, and in particular
diff --git a/drivers/net/ethernet/broadcom/Kconfig b/drivers/net/ethernet/broadcom/Kconfig
index 46d07b81097f..1bcf406a9e36 100644
--- a/drivers/net/ethernet/broadcom/Kconfig
+++ b/drivers/net/ethernet/broadcom/Kconfig
@@ -98,7 +98,6 @@ config BNX2
config CNIC
tristate "QLogic CNIC support"
depends on PCI && (IPV6 || IPV6=n)
- depends on MMU
select BNX2
select UIO
help
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index da28295b4aac..9c0e4aaf4e8c 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -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.
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 186858293df5..206f271e869a 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -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));
diff --git a/drivers/scsi/bnx2fc/Kconfig b/drivers/scsi/bnx2fc/Kconfig
index ecdc0f0f4f4e..3cf7e08df809 100644
--- a/drivers/scsi/bnx2fc/Kconfig
+++ b/drivers/scsi/bnx2fc/Kconfig
@@ -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
diff --git a/drivers/scsi/bnx2i/Kconfig b/drivers/scsi/bnx2i/Kconfig
index 0cc06c2ce0b8..75ace2302fed 100644
--- a/drivers/scsi/bnx2i/Kconfig
+++ b/drivers/scsi/bnx2i/Kconfig
@@ -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
diff --git a/drivers/vfio/pci/Kconfig b/drivers/vfio/pci/Kconfig
index c3bcb6911c53..2b0172f54665 100644
--- a/drivers/vfio/pci/Kconfig
+++ b/drivers/vfio/pci/Kconfig
@@ -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
--
2.39.5
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] [v2] PCI: add CONFIG_MMU dependency
2025-04-23 20:16 [PATCH] [v2] PCI: add CONFIG_MMU dependency Arnd Bergmann
@ 2025-04-23 20:43 ` Bjorn Helgaas
0 siblings, 0 replies; 2+ messages in thread
From: Bjorn Helgaas @ 2025-04-23 20:43 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Bjorn Helgaas, Arnd Bergmann, Martin K . Petersen, Alex Deucher,
Thomas Zimmermann, David Airlie, Simona Vetter,
Geert Uytterhoeven, dri-devel, linux-kernel, netdev, linux-pci,
linux-scsi, kvm
On Wed, Apr 23, 2025 at 10:16:32PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
>
> 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/
> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> # SCSI
> Acked-by: Alex Deucher <alexander.deucher@amd.com>
> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
> Cc: Bjorn Helgaas <bhelgaas@google.com>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> v2: update changelog text
>
> Bjorn, can you take this through the PCI tree? I thought about splitting
> it up by subsystem, but it's really one thing that I'm doing here, and
> doing it in one bit makes more sense to me.
Applied to pci/misc for v6.16, thanks!
The PCI tree is based on -rc1, so there were a few minor merge
conflicts, but they're obvious.
> ---
> drivers/accel/qaic/Kconfig | 1 -
> drivers/firewire/Kconfig | 2 +-
> drivers/gpu/drm/Kconfig | 2 +-
> drivers/gpu/drm/amd/amdgpu/Kconfig | 3 +--
> drivers/gpu/drm/ast/Kconfig | 2 +-
> drivers/gpu/drm/gma500/Kconfig | 2 +-
> drivers/gpu/drm/hisilicon/hibmc/Kconfig | 1 -
> drivers/gpu/drm/loongson/Kconfig | 2 +-
> drivers/gpu/drm/mgag200/Kconfig | 2 +-
> drivers/gpu/drm/nouveau/Kconfig | 3 +--
> drivers/gpu/drm/qxl/Kconfig | 2 +-
> drivers/gpu/drm/radeon/Kconfig | 2 +-
> drivers/gpu/drm/tiny/Kconfig | 2 +-
> drivers/gpu/drm/vmwgfx/Kconfig | 2 +-
> drivers/gpu/drm/xe/Kconfig | 2 +-
> drivers/net/ethernet/broadcom/Kconfig | 1 -
> drivers/pci/Kconfig | 1 +
> drivers/pci/pci.c | 4 ++--
> drivers/scsi/bnx2fc/Kconfig | 1 -
> drivers/scsi/bnx2i/Kconfig | 1 -
> drivers/vfio/pci/Kconfig | 2 +-
> 21 files changed, 17 insertions(+), 23 deletions(-)
>
> diff --git a/drivers/accel/qaic/Kconfig b/drivers/accel/qaic/Kconfig
> index a9f866230058..5e405a19c157 100644
> --- a/drivers/accel/qaic/Kconfig
> +++ b/drivers/accel/qaic/Kconfig
> @@ -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
> diff --git a/drivers/firewire/Kconfig b/drivers/firewire/Kconfig
> index 905c82e26ce7..a5f5e250223a 100644
> --- a/drivers/firewire/Kconfig
> +++ b/drivers/firewire/Kconfig
> @@ -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
> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> index 89d00265d578..831bd384f1fd 100644
> --- a/drivers/gpu/drm/Kconfig
> +++ b/drivers/gpu/drm/Kconfig
> @@ -393,7 +393,7 @@ 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
> diff --git a/drivers/gpu/drm/amd/amdgpu/Kconfig b/drivers/gpu/drm/amd/amdgpu/Kconfig
> index 7b95221d2f3d..64e603f971b8 100644
> --- a/drivers/gpu/drm/amd/amdgpu/Kconfig
> +++ b/drivers/gpu/drm/amd/amdgpu/Kconfig
> @@ -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
> diff --git a/drivers/gpu/drm/ast/Kconfig b/drivers/gpu/drm/ast/Kconfig
> index da0663542e8a..242fbccdf844 100644
> --- a/drivers/gpu/drm/ast/Kconfig
> +++ b/drivers/gpu/drm/ast/Kconfig
> @@ -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
> diff --git a/drivers/gpu/drm/gma500/Kconfig b/drivers/gpu/drm/gma500/Kconfig
> index 1613e51eff2d..e4c80e1a6da5 100644
> --- a/drivers/gpu/drm/gma500/Kconfig
> +++ b/drivers/gpu/drm/gma500/Kconfig
> @@ -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
> depends on ACPI_VIDEO || !ACPI
> depends on I2C
> diff --git a/drivers/gpu/drm/hisilicon/hibmc/Kconfig b/drivers/gpu/drm/hisilicon/hibmc/Kconfig
> index 98d77d74999d..d1f3f5793f34 100644
> --- a/drivers/gpu/drm/hisilicon/hibmc/Kconfig
> +++ b/drivers/gpu/drm/hisilicon/hibmc/Kconfig
> @@ -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
> diff --git a/drivers/gpu/drm/loongson/Kconfig b/drivers/gpu/drm/loongson/Kconfig
> index 552edfec7afb..d739d51cf54c 100644
> --- a/drivers/gpu/drm/loongson/Kconfig
> +++ b/drivers/gpu/drm/loongson/Kconfig
> @@ -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
> diff --git a/drivers/gpu/drm/mgag200/Kconfig b/drivers/gpu/drm/mgag200/Kconfig
> index 412dcbea0e2d..a962ae564a75 100644
> --- a/drivers/gpu/drm/mgag200/Kconfig
> +++ b/drivers/gpu/drm/mgag200/Kconfig
> @@ -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
> diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
> index 9ba89b35d1a2..4fae780f7d78 100644
> --- a/drivers/gpu/drm/nouveau/Kconfig
> +++ b/drivers/gpu/drm/nouveau/Kconfig
> @@ -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
> depends on (ACPI_VIDEO && ACPI_WMI && MXM_WMI) || !(ACPI && X86)
> depends on BACKLIGHT_CLASS_DEVICE
> select IOMMU_API
> @@ -86,7 +86,6 @@ 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
> diff --git a/drivers/gpu/drm/qxl/Kconfig b/drivers/gpu/drm/qxl/Kconfig
> index 69427eb8bed2..d8f24bcae34b 100644
> --- a/drivers/gpu/drm/qxl/Kconfig
> +++ b/drivers/gpu/drm/qxl/Kconfig
> @@ -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
> diff --git a/drivers/gpu/drm/radeon/Kconfig b/drivers/gpu/drm/radeon/Kconfig
> index f51bace9555d..c479f0c0dd5c 100644
> --- a/drivers/gpu/drm/radeon/Kconfig
> +++ b/drivers/gpu/drm/radeon/Kconfig
> @@ -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
> diff --git a/drivers/gpu/drm/tiny/Kconfig b/drivers/gpu/drm/tiny/Kconfig
> index 95c1457d7730..c50186a65464 100644
> --- a/drivers/gpu/drm/tiny/Kconfig
> +++ b/drivers/gpu/drm/tiny/Kconfig
> @@ -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
> diff --git a/drivers/gpu/drm/vmwgfx/Kconfig b/drivers/gpu/drm/vmwgfx/Kconfig
> index 6c3c2922ae8b..aab646b91ca9 100644
> --- a/drivers/gpu/drm/vmwgfx/Kconfig
> +++ b/drivers/gpu/drm/vmwgfx/Kconfig
> @@ -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
> diff --git a/drivers/gpu/drm/xe/Kconfig b/drivers/gpu/drm/xe/Kconfig
> index dd256b355613..bb3f34a29f4e 100644
> --- a/drivers/gpu/drm/xe/Kconfig
> +++ b/drivers/gpu/drm/xe/Kconfig
> @@ -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))
> depends on INTEL_VSEC
> select INTERVAL_TREE
> # we need shmfs for the swappable backing store, and in particular
> diff --git a/drivers/net/ethernet/broadcom/Kconfig b/drivers/net/ethernet/broadcom/Kconfig
> index 46d07b81097f..1bcf406a9e36 100644
> --- a/drivers/net/ethernet/broadcom/Kconfig
> +++ b/drivers/net/ethernet/broadcom/Kconfig
> @@ -98,7 +98,6 @@ config BNX2
> config CNIC
> tristate "QLogic CNIC support"
> depends on PCI && (IPV6 || IPV6=n)
> - depends on MMU
> select BNX2
> select UIO
> help
> diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
> index da28295b4aac..9c0e4aaf4e8c 100644
> --- a/drivers/pci/Kconfig
> +++ b/drivers/pci/Kconfig
> @@ -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.
> diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
> index 186858293df5..206f271e869a 100644
> --- a/drivers/pci/pci.c
> +++ b/drivers/pci/pci.c
> @@ -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));
> diff --git a/drivers/scsi/bnx2fc/Kconfig b/drivers/scsi/bnx2fc/Kconfig
> index ecdc0f0f4f4e..3cf7e08df809 100644
> --- a/drivers/scsi/bnx2fc/Kconfig
> +++ b/drivers/scsi/bnx2fc/Kconfig
> @@ -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
> diff --git a/drivers/scsi/bnx2i/Kconfig b/drivers/scsi/bnx2i/Kconfig
> index 0cc06c2ce0b8..75ace2302fed 100644
> --- a/drivers/scsi/bnx2i/Kconfig
> +++ b/drivers/scsi/bnx2i/Kconfig
> @@ -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
> diff --git a/drivers/vfio/pci/Kconfig b/drivers/vfio/pci/Kconfig
> index c3bcb6911c53..2b0172f54665 100644
> --- a/drivers/vfio/pci/Kconfig
> +++ b/drivers/vfio/pci/Kconfig
> @@ -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
> --
> 2.39.5
>
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2025-04-23 20:43 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
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2025-04-23 20:16 [PATCH] [v2] PCI: add CONFIG_MMU dependency Arnd Bergmann
2025-04-23 20:43 ` Bjorn Helgaas
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