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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Support 'make compile_commands.json' to generate the compilation
database more easily, avoiding stale entries
- Support 'make clang-analyzer' and 'make clang-tidy' for static checks
using clang-tidy
- Preprocess scripts/modules.lds.S to allow CONFIG options in the
module linker script
- Drop cc-option tests from compiler flags supported by our minimal
GCC/Clang versions
- Use always 12-digits commit hash for CONFIG_LOCALVERSION_AUTO=y
- Use sha1 build id for both BFD linker and LLD
- Improve deb-pkg for reproducible builds and rootless builds
- Remove stale, useless scripts/namespace.pl
- Turn -Wreturn-type warning into error
- Fix build error of deb-pkg when CONFIG_MODULES=n
- Replace 'hostname' command with more portable 'uname -n'
- Various Makefile cleanups
* tag 'kbuild-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits)
kbuild: Use uname for LINUX_COMPILE_HOST detection
kbuild: Only add -fno-var-tracking-assignments for old GCC versions
kbuild: remove leftover comment for filechk utility
treewide: remove DISABLE_LTO
kbuild: deb-pkg: clean up package name variables
kbuild: deb-pkg: do not build linux-headers package if CONFIG_MODULES=n
kbuild: enforce -Werror=return-type
scripts: remove namespace.pl
builddeb: Add support for all required debian/rules targets
builddeb: Enable rootless builds
builddeb: Pass -n to gzip for reproducible packages
kbuild: split the build log of kallsyms
kbuild: explicitly specify the build id style
scripts/setlocalversion: make git describe output more reliable
kbuild: remove cc-option test of -Werror=date-time
kbuild: remove cc-option test of -fno-stack-check
kbuild: remove cc-option test of -fno-strict-overflow
kbuild: move CFLAGS_{KASAN,UBSAN,KCSAN} exports to relevant Makefiles
kbuild: remove redundant CONFIG_KASAN check from scripts/Makefile.kasan
kbuild: do not create built-in objects for external module builds
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This change removes all instances of DISABLE_LTO from
Makefiles, as they are currently unused, and the preferred
method of disabling LTO is to filter out the flags instead.
Note added by Masahiro Yamada:
DISABLE_LTO was added as preparation for GCC LTO, but GCC LTO was
not pulled into the mainline. (https://lkml.org/lkml/2014/4/8/272)
Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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ld's --build-id defaults to "sha1" style, while lld defaults to "fast".
The build IDs are very different between the two, which may confuse
programs that reference them.
Signed-off-by: Bill Wendling <morbo@google.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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The minimal compiler versions, GCC 4.9 and Clang 10 support this flag.
Here is the godbolt:
https://godbolt.org/z/xvjcMa
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Will Deacon <will@kernel.org>
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The minimal compiler versions, GCC 4.9 and Clang 10 support this flag.
Here is the godbolt:
https://godbolt.org/z/odq8h9
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Will Deacon <will@kernel.org>
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There was a request to preprocess the module linker script like we
do for the vmlinux one. (https://lkml.org/lkml/2020/8/21/512)
The difference between vmlinux.lds and module.lds is that the latter
is needed for external module builds, thus must be cleaned up by
'make mrproper' instead of 'make clean'. Also, it must be created
by 'make modules_prepare'.
You cannot put it in arch/$(SRCARCH)/kernel/, which is cleaned up by
'make clean'. I moved arch/$(SRCARCH)/kernel/module.lds to
arch/$(SRCARCH)/include/asm/module.lds.h, which is included from
scripts/module.lds.S.
scripts/module.lds is fine because 'make clean' keeps all the
build artifacts under scripts/.
You can add arch-specific sections in <asm/module.lds.h>.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Jessica Yu <jeyu@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Jessica Yu <jeyu@kernel.org>
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The vdso linker script is preprocessed on demand.
Adding it to 'targets' is enough to include the .cmd file.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Greentime Hu <green.hu@gmail.com>
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Pull VFIO updates from Alex Williamson:
- New fsl-mc vfio bus driver supporting userspace drivers of objects
within NXP's DPAA2 architecture (Diana Craciun)
- Support for exposing zPCI information on s390 (Matthew Rosato)
- Fixes for "detached" VFs on s390 (Matthew Rosato)
- Fixes for pin-pages and dma-rw accesses (Yan Zhao)
- Cleanups and optimize vconfig regen (Zenghui Yu)
- Fix duplicate irq-bypass token registration (Alex Williamson)
* tag 'vfio-v5.10-rc1' of git://github.com/awilliam/linux-vfio: (30 commits)
vfio iommu type1: Fix memory leak in vfio_iommu_type1_pin_pages
vfio/pci: Clear token on bypass registration failure
vfio/fsl-mc: fix the return of the uninitialized variable ret
vfio/fsl-mc: Fix the dead code in vfio_fsl_mc_set_irq_trigger
vfio/fsl-mc: Fixed vfio-fsl-mc driver compilation on 32 bit
MAINTAINERS: Add entry for s390 vfio-pci
vfio-pci/zdev: Add zPCI capabilities to VFIO_DEVICE_GET_INFO
vfio/fsl-mc: Add support for device reset
vfio/fsl-mc: Add read/write support for fsl-mc devices
vfio/fsl-mc: trigger an interrupt via eventfd
vfio/fsl-mc: Add irq infrastructure for fsl-mc devices
vfio/fsl-mc: Added lock support in preparation for interrupt handling
vfio/fsl-mc: Allow userspace to MMAP fsl-mc device MMIO regions
vfio/fsl-mc: Implement VFIO_DEVICE_GET_REGION_INFO ioctl call
vfio/fsl-mc: Implement VFIO_DEVICE_GET_INFO ioctl
vfio/fsl-mc: Scan DPRC objects on vfio-fsl-mc driver bind
vfio: Introduce capability definitions for VFIO_DEVICE_GET_INFO
s390/pci: track whether util_str is valid in the zpci_dev
s390/pci: stash version in the zpci_dev
vfio/fsl-mc: Add VFIO framework skeleton for fsl-mc devices
...
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v5.10/vfio/next
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We'll need to keep track of whether or not the byte string in util_str is
valid and thus needs to be passed to a vfio-pci passthrough device.
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Acked-by: Niklas Schnelle <schnelle@linux.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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In preparation for passing the info on to vfio-pci devices, stash the
supported PCI version for the target device in the zpci_dev.
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Acked-by: Niklas Schnelle <schnelle@linux.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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For s390 we can have VFs that are passed-through without the associated
PF. Firmware provides an emulation layer to allow these devices to
operate independently, but is missing emulation of the Memory Space
Enable bit. For these as well as linked VFs, set no_command_memory
which specifies these devices do not implement PCI_COMMAND_MEMORY.
Fixes: abafbc551fdd ("vfio-pci: Invalidate mmaps and block MMIO access on disabled memory")
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration:
- Print IRQ number used by PCIe Link Bandwidth Notification (Dongdong
Liu)
- Add schedule point in pci_read_config() to reduce max latency
(Jiang Biao)
- Add Kconfig options for MPS/MRRS strategy (Jim Quinlan)
Resource management:
- Fix pci_iounmap() memory leak when !CONFIG_GENERIC_IOMAP (Lorenzo
Pieralisi)
PCIe native device hotplug:
- Reduce noisiness on hot removal (Lukas Wunner)
Power management:
- Revert "PCI/PM: Apply D2 delay as milliseconds, not microseconds"
that was done on the basis of spec typo (Bjorn Helgaas)
- Rename pci_dev.d3_delay to d3hot_delay to remove D3hot/D3cold
ambiguity (Krzysztof Wilczyński)
- Remove unused pcibios_pm_ops (Vaibhav Gupta)
IOMMU:
- Enable Translation Blocking for external devices to harden against
DMA attacks (Rajat Jain)
Error handling:
- Add an ACPI APEI notifier chain for vendor CPER records to enable
device-specific error handling (Shiju Jose)
ASPM:
- Remove struct aspm_register_info to simplify code (Saheed O.
Bolarinwa)
Amlogic Meson PCIe controller driver:
- Build as module by default (Kevin Hilman)
Ampere Altra PCIe controller driver:
- Add MCFG quirk to work around non-standard ECAM implementation
(Tuan Phan)
Broadcom iProc PCIe controller driver:
- Set affinity mask on MSI interrupts (Mark Tomlinson)
Broadcom STB PCIe controller driver:
- Make PCIE_BRCMSTB depend on ARCH_BRCMSTB (Jim Quinlan)
- Add DT bindings for more Brcmstb chips (Jim Quinlan)
- Add bcm7278 register info (Jim Quinlan)
- Add bcm7278 PERST# support (Jim Quinlan)
- Add suspend and resume pm_ops (Jim Quinlan)
- Add control of rescal reset (Jim Quinlan)
- Set additional internal memory DMA viewport sizes (Jim Quinlan)
- Accommodate MSI for older chips (Jim Quinlan)
- Set bus max burst size by chip type (Jim Quinlan)
- Add support for bcm7211, bcm7216, bcm7445, bcm7278 (Jim Quinlan)
Freescale i.MX6 PCIe controller driver:
- Use dev_err_probe() to reduce redundant messages (Anson Huang)
Freescale Layerscape PCIe controller driver:
- Enforce 4K DMA buffer alignment in endpoint test (Hou Zhiqiang)
- Add DT compatible strings for ls1088a, ls2088a (Xiaowei Bao)
- Add endpoint support for ls1088a, ls2088a (Xiaowei Bao)
- Add endpoint test support for lS1088a (Xiaowei Bao)
- Add MSI-X support for ls1088a (Xiaowei Bao)
HiSilicon HIP PCIe controller driver:
- Handle HIP-specific errors via ACPI APEI (Yicong Yang)
HiSilicon Kirin PCIe controller driver:
- Return -EPROBE_DEFER if the GPIO isn't ready (Bean Huo)
Intel VMD host bridge driver:
- Factor out physical offset, bus offset, IRQ domain, IRQ allocation
(Jon Derrick)
- Use generic PCI PM correctly (Jon Derrick)
Marvell Aardvark PCIe controller driver:
- Fix compilation on s390 (Pali Rohár)
- Implement driver 'remove' function and allow to build it as module
(Pali Rohár)
- Move PCIe reset card code to advk_pcie_train_link() (Pali Rohár)
- Convert mvebu a3700 internal SMCC firmware return codes to errno
(Pali Rohár)
- Fix initialization with old Marvell's Arm Trusted Firmware (Pali
Rohár)
Microsoft Hyper-V host bridge driver:
- Fix hibernation in case interrupts are not re-created (Dexuan Cui)
NVIDIA Tegra PCIe controller driver:
- Stop checking return value of debugfs_create() functions (Greg
Kroah-Hartman)
- Convert to use DEFINE_SEQ_ATTRIBUTE macro (Liu Shixin)
Qualcomm PCIe controller driver:
- Reset PCIe to work around Qsdk U-Boot issue (Ansuel Smith)
Renesas R-Car PCIe controller driver:
- Add DT documentation for r8a774a1, r8a774b1, r8a774e1 endpoints
(Lad Prabhakar)
- Add RZ/G2M, RZ/G2N, RZ/G2H IDs to endpoint test (Lad Prabhakar)
- Add DT support for r8a7742 (Lad Prabhakar)
Socionext UniPhier Pro5 controller driver:
- Add DT descriptions of iATU register (host and endpoint) (Kunihiko
Hayashi)
Synopsys DesignWare PCIe controller driver:
- Add link up check in dw_child_pcie_ops.map_bus() (racy, but seems
unavoidable) (Hou Zhiqiang)
- Fix endpoint Header Type check so multi-function devices work (Hou
Zhiqiang)
- Skip PCIE_MSI_INTR0* programming if MSI is disabled (Jisheng Zhang)
- Stop leaking MSI page in suspend/resume (Jisheng Zhang)
- Add common iATU register support instead of keystone-specific code
(Kunihiko Hayashi)
- Major config space access and other cleanups in dwc core and
drivers that use it (al, exynos, histb, imx6, intel-gw, keystone,
kirin, meson, qcom, tegra) (Rob Herring)
- Add multiple PFs support for endpoint (Xiaowei Bao)
- Add MSI-X doorbell mode in endpoint mode (Xiaowei Bao)
Miscellaneous:
- Use fallthrough pseudo-keyword (Gustavo A. R. Silva)
- Fix "0 used as NULL pointer" warnings (Gustavo Pimentel)
- Fix "cast truncates bits from constant value" warnings (Gustavo
Pimentel)
- Remove redundant zeroing for sg_init_table() (Julia Lawall)
- Use scnprintf(), not snprintf(), in sysfs "show" functions
(Krzysztof Wilczyński)
- Remove unused assignments (Krzysztof Wilczyński)
- Fix "0 used as NULL pointer" warning (Krzysztof Wilczyński)
- Simplify bool comparisons (Krzysztof Wilczyński)
- Use for_each_child_of_node() and for_each_node_by_name() (Qinglang
Miao)
- Simplify return expressions (Qinglang Miao)"
* tag 'pci-v5.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (147 commits)
PCI: vmd: Update VMD PM to correctly use generic PCI PM
PCI: vmd: Create IRQ allocation helper
PCI: vmd: Create IRQ Domain configuration helper
PCI: vmd: Create bus offset configuration helper
PCI: vmd: Create physical offset helper
PCI: v3-semi: Remove unneeded break
PCI: dwc: Add link up check in dw_child_pcie_ops.map_bus()
PCI/ASPM: Remove struct pcie_link_state.l1ss
PCI/ASPM: Remove struct aspm_register_info.l1ss_cap
PCI/ASPM: Pass L1SS Capabilities value, not struct aspm_register_info
PCI/ASPM: Remove struct aspm_register_info.l1ss_ctl1
PCI/ASPM: Remove struct aspm_register_info.l1ss_ctl2 (unused)
PCI/ASPM: Remove struct aspm_register_info.l1ss_cap_ptr
PCI/ASPM: Remove struct aspm_register_info.latency_encoding
PCI/ASPM: Remove struct aspm_register_info.enabled
PCI/ASPM: Remove struct aspm_register_info.support
PCI/ASPM: Use 'parent' and 'child' for readability
PCI/ASPM: Move LTR path check to where it's used
PCI/ASPM: Move pci_clear_and_set_dword() earlier
PCI: dwc: Fix MSI page leakage in suspend/resume
...
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- Remove unused msi_ctrl, io_optional and align_resource fields from ARM
struct hw_pci (Lorenzo Pieralisi)
* remotes/lorenzo/pci/arm:
ARM/PCI: Remove unused fields from struct hw_pci
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The msi_ctrl, io_optional and align_resource fields in struct hw_pci are
currently unused by arm/mach PCI host controller drivers and we won't
be adding any new users.
Remove them and related code.
Link: https://lore.kernel.org/r/20200904141607.4066-1-lorenzo.pieralisi@arm.com
Link: https://lore.kernel.org/r/20200916103045.28651-1-lorenzo.pieralisi@arm.com
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
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- Remove useless __KERNEL__ preprocessor guard in sparc io_32.h (Lorenzo
Pieralisi)
- Move ioremap/iounmap declaration so it's visible in asm-generic/io.h
(Lorenzo Pieralisi)
- Fix memory leak in generic !CONFIG_GENERIC_IOMAP pci_iounmap()
implementation (Lorenzo Pieralisi)
* remotes/lorenzo/pci/pci-iomap:
asm-generic/io.h: Fix !CONFIG_GENERIC_IOMAP pci_iounmap() implementation
sparc32: Move ioremap/iounmap declaration before asm-generic/io.h include
sparc32: Remove useless io_32.h __KERNEL__ preprocessor guard
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Move the ioremap/iounmap declaration before asm-generic/io.h is
included so that it is visible within it.
Link: https://lore.kernel.org/r/93e2f23cda474a92a4708d4c50c9c359426a2162.1600254147.git.lorenzo.pieralisi@arm.com
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Cc: "David S. Miller" <davem@davemloft.net>
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The __KERNEL_ preprocessor guard is useless in non-uapi headers.
Remove it.
Link: https://lore.kernel.org/r/084753d3064fe946ff1963eda2eb425cfd7daa7b.1600254147.git.lorenzo.pieralisi@arm.com
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: David S. Miller <davem@davemloft.net>
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- Remove unnecessary #includes (Gustavo Pimentel)
- Fix intel_mid_pci.c build error when !CONFIG_ACPI (Randy Dunlap)
- Use scnprintf(), not snprintf(), in sysfs "show" functions (Krzysztof
Wilczyński)
- Simplify pci-pf-stub by using module_pci_driver() (Liu Shixin)
- Print IRQ used by Link Bandwidth Notification (Dongdong Liu)
- Update sysfs mmap-related #ifdef comments (Clint Sbisa)
- Simplify pci_dev_reset_slot_function() (Lukas Wunner)
- Use "NULL" instead of "0" to fix sparse warnings (Gustavo Pimentel)
- Simplify bool comparisons (Krzysztof Wilczyński)
- Drop double zeroing for P2PDMA sg_init_table() (Julia Lawall)
* pci/misc:
PCI: v3-semi: Remove unneeded break
PCI/P2PDMA: Drop double zeroing for sg_init_table()
PCI: Simplify bool comparisons
PCI: endpoint: Use "NULL" instead of "0" as a NULL pointer
PCI: Simplify pci_dev_reset_slot_function()
PCI: Update mmap-related #ifdef comments
PCI/LINK: Print IRQ number used by port
PCI/IOV: Simplify pci-pf-stub with module_pci_driver()
PCI: Use scnprintf(), not snprintf(), in sysfs "show" functions
x86/PCI: Fix intel_mid_pci.c build error when ACPI is not enabled
PCI: Remove unnecessary header includes
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Fix build error when CONFIG_ACPI is not set/enabled by adding the header
file <asm/acpi.h> which contains a stub for the function in the build
error.
../arch/x86/pci/intel_mid_pci.c: In function ‘intel_mid_pci_init’:
../arch/x86/pci/intel_mid_pci.c:303:2: error: implicit declaration of function ‘acpi_noirq_set’; did you mean ‘acpi_irq_get’? [-Werror=implicit-function-declaration]
acpi_noirq_set();
Fixes: a912a7584ec3 ("x86/platform/intel-mid: Move PCI initialization to arch_init()")
Link: https://lore.kernel.org/r/ea903917-e51b-4cc9-2680-bc1e36efa026@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Jesse Barnes <jsbarnes@google.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org # v4.16+
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jesse Barnes <jsbarnes@google.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
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PCI devices support two variants of the D3 power state: D3hot (main power
present) D3cold (main power removed). Previously struct pci_dev contained:
unsigned int d3_delay; /* D3->D0 transition time in ms */
unsigned int d3cold_delay; /* D3cold->D0 transition time in ms */
"d3_delay" refers specifically to the D3hot state. Rename it to
"d3hot_delay" to avoid ambiguity and align with the ACPI "_DSM for
Specifying Device Readiness Durations" in the PCI Firmware spec r3.2,
sec 4.6.9.
There is no change to the functionality.
Link: https://lore.kernel.org/r/20200730210848.1578826-1-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull initial set_fs() removal from Al Viro:
"Christoph's set_fs base series + fixups"
* 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fs: Allow a NULL pos pointer to __kernel_read
fs: Allow a NULL pos pointer to __kernel_write
powerpc: remove address space overrides using set_fs()
powerpc: use non-set_fs based maccess routines
x86: remove address space overrides using set_fs()
x86: make TASK_SIZE_MAX usable from assembly code
x86: move PAGE_OFFSET, TASK_SIZE & friends to page_{32,64}_types.h
lkdtm: remove set_fs-based tests
test_bitmap: remove user bitmap tests
uaccess: add infrastructure for kernel builds with set_fs()
fs: don't allow splice read/write without explicit ops
fs: don't allow kernel reads and writes without iter ops
sysctl: Convert to iter interfaces
proc: add a read_iter method to proc proc_ops
proc: cleanup the compat vs no compat file ops
proc: remove a level of indentation in proc_get_inode
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Stop providing the possibility to override the address space using
set_fs() now that there is no need for that any more.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Provide __get_kernel_nofault and __put_kernel_nofault routines to
implement the maccess routines without messing with set_fs and without
opening up access to user space.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Stop providing the possibility to override the address space using
set_fs() now that there is no need for that any more. To properly
handle the TASK_SIZE_MAX checking for 4 vs 5-level page tables on
x86 a new alternative is introduced, which just like the one in
entry_64.S has to use the hardcoded virtual address bits to escape
the fact that TASK_SIZE_MAX isn't actually a constant when 5-level
page tables are enabled.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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For 64-bit the only thing missing was a strategic _AC, and for 32-bit we
need to use __PAGE_OFFSET instead of PAGE_OFFSET in the TASK_SIZE
definition to escape the explicit unsigned long cast. This just works
because __PAGE_OFFSET is defined using _AC itself and thus never needs
the cast anyway.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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At least for 64-bit this moves them closer to some of the defines
they are based on, and it prepares for using the TASK_SIZE_MAX
definition from assembly.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Add a CONFIG_SET_FS option that is selected by architecturess that
implement set_fs, which is all of them initially. If the option is not
set stubs for routines related to overriding the address space are
provided so that architectures can start to opt out of providing set_fs.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
"Power-supply core:
- add wireless type
- properly document current direction
Battery/charger driver changes:
- new fuel-gauge/charger driver for RN5T618/RN5T619
- new charger driver for BQ25980, BQ25975 and BQ25960
- bq27xxx-battery: add support for TI bq34z100
- gpio-charger: convert to GPIO descriptors
- gpio-charger: add optional support for charge current limiting
- max17040: add support for max17041, max17043, max17044
- max17040: add support for max17048, max17049, max17058, max17059
- smb347-charger: add DT support
- smb247-charger: add SMB345 and SMB358 support
- simple-battery: add temperature properties
- lots of minor fixes, cleanups and DT binding YAML conversions
Reset drivers:
- ocelot: Add support for Sparx5"
* tag 'for-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (81 commits)
power: reset: POWER_RESET_OCELOT_RESET should depend on Ocelot or Sparx5
power: supply: bq25980: Fix uninitialized wd_reg_val and overrun
power: supply: ltc2941: Fix ptr to enum cast
power: supply: test-power: revise parameter printing to use sprintf
power: supply: charger-manager: fix incorrect check on charging_duration_ms
power: supply: max17040: Fix ptr to enum cast
power: supply: bq25980: Fix uninitialized wd_reg_val
power: supply: bq25980: remove redundant zero check on ret
power: reset: ocelot: Add support for Sparx5
dt-bindings: reset: ocelot: Add Sparx5 support
power: supply: sbs-battery: keep error code when get_property() fails
power: supply: bq25980: Add support for the BQ259xx family
dt-binding: bq25980: Add the bq25980 flash charger
power: supply: fix spelling mistake "unprecise" -> "imprecise"
power: supply: test_power: add missing newlines when printing parameters by sysfs
power: supply: pm2301: drop duplicated i2c_device_id
power: supply: charger-manager: drop unused charger assignment
power: supply: rt9455: skip 'struct acpi_device_id' when !CONFIG_ACPI
power: supply: goldfish: skip 'struct acpi_device_id' when !CONFIG_ACPI
power: supply: bq25890: skip 'struct acpi_device_id' when !CONFIG_ACPI
...
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This converts the GPIO charger to use exclusively GPIO
descriptors, moving the two remaining platforms passing
global GPIO numbers over to using a GPIO descriptor table.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
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Pull ARM updates from Russell King:
- handle inexact watchpoint addresses (Douglas Anderson)
- decompressor serial debug cleanups (Linus Walleij)
- update L2 cache prefetch bits (Guillaume Tucker)
- add text offset and malloc size to the decompressor kexec data
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: add malloc size to decompressor kexec size structure
ARM: add TEXT_OFFSET to decompressor kexec image structure
ARM: 9007/1: l2c: fix prefetch bits init in L2X0_AUX_CTRL using DT values
ARM: 9010/1: uncompress: Print the location of appended DTB
ARM: 9009/1: uncompress: Enable debug in head.S
ARM: 9008/1: uncompress: Drop excess whitespace print
ARM: 9006/1: uncompress: Wait for ready and busy in debug prints
ARM: 9005/1: debug: Select flow control for all debug UARTs
ARM: 9004/1: debug: Split waituart to CTS and TXRDY
ARM: 9003/1: uncompress: Delete unused debug macros
ARM: 8997/2: hw_breakpoint: Handle inexact watchpoint addresses
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Add the required malloc size to the decompressor kexec size structure.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Add the TEXT_OFFSET to the decompressor's kexec image structure to
kexec knows what offset to use.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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The L310_PREFETCH_CTRL register bits 28 and 29 to enable data and
instruction prefetch respectively can also be accessed via the
L2X0_AUX_CTRL register. They appear to be actually wired together in
hardware between the registers. Changing them in the prefetch
register only will get undone when restoring the aux control register
later on. For this reason, set these bits in both registers during
initialisation according to the devicetree property values.
Link: https://lore.kernel.org/lkml/76f2f3ad5e77e356e0a5b99ceee1e774a2842c25.1597061474.git.guillaume.tucker@collabora.com/
Fixes: ec3bd0e68a67 ("ARM: 8391/1: l2c: add options to overwrite prefetching behavior")
Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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When using the kernel with an appended DTB it is useful to
know where this will end up in the physical memory at the
time the kernel boots.
We add a debug print macro that will help out with this.
Here is a sample debug print after passing -DDEBUG to head.S
during compilation:
DTB:0x40CEBA70 (0x000051B5)
C:0x402080C0-0x40CF0CE0->0x41801D00-0x422EA920
DTB:0x422E56B0 (0x00005262)
This means that the appended DTB is first found after the
compressed kernel at 0x40CEBA70 of size 0x51B5 and then
after the compressed kernel is moved to 0x41801D00
it is found again at 0x422E56B0 and is there size 0x5262.
The growth in size of the FDT is due to the call to
atags_to_fdt() that augments the DTB with ATAG information.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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The assembly file head.S includes some debug code that does
not get enabled when we select CONFIG_DEBUG_UNCOMPRESS.
The debug in head.S relies on the user tagging on -DDEBUG
on the compilation command line.
To simplify debugging, tag on -DDEBUG so that we also get
these debug messages when selecting CONFIG_DEBUG_UNCOMPRESS.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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This drops some whitespace from the debug message about
where we move the compressed kernel: r after the message
is completely surplus since the putc routine will anyway
add r after n, and the initial linefeed just assumes
that this will always be the first message on the console,
which is not certain to be true.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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For some platforms such as Qualcomm we need to wait for the
UART to be ready before writing characters to the UART
in the same manner as the macro in debug.S used with the
main "Uncompressing Linux ..." text. Pass an extra temporary
variable to writeb and make it call waituarttxrdy and
busyuart just like the other decomression messages.
Optionally it will also call waituartcts if and only if
CONFIG_DEBUG_UART_FLOW_CONTROL is selected.
After this the decompression debug messages work fine on
Qualcomm platforms if you compile head.S with -DDEBUG.
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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Instead of a flow control selection mechanism specifically for
8250, make this available for all debug UARTs. If the debug
UART supports waiting for CTS to be asserted, then this code
can be activated for terminals that need it.
We keep the defaults for EBSA110, Footbridge, Gemini and RPC
so that this still works as expected for these older platforms:
they assume that flow control shall be enabled for debug
prints.
I switch the location of the check for
ifdef CONFIG_DEBUG_UART_FLOW_CONTROL from the actual debug
UART drivers: the code would get compiled-out for 8250 and
Tegra unless their custom config (or passing -DFLOW_CONTROL
in the Tegra case) was not set. Instead this is conditional
at the three places where we print debug messages. The idea
is that debug UARTs can be implemented without this ifdef
boilerplate so they look cleaner, alas the ifdef has to be
somewhere.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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This patch was triggered by a remark from Russell that
introducing a call to the waituart (needed to fix debug prints
on the Qualcomm platforms) was dangerous because in some cases
this will involve waiting for a modem CTS (clear to send)
signal, and debug messages would maybe not work on platforms
with no modem connected to the UART port: they will just
hang waiting for the modem to assert CTS and this might never
happen.
Looking through all UART debug drivers implementing the waituart
macro I discovered that all users except two actually use this
macro to check if the UART is ready for TX, let's call this
TXRDY.
Only two debug UART drivers actually check for CTS:
- arch/arm/include/debug/8250.S
- arch/arm/include/debug/tegra.S
The former is very significant since the 8250 is possibly
the most common UART on the planet.
We have the following problem: the semantics of waituart are
ambiguous making it dangerous to introduce the macro to debug
code fixing debug prints for Qualcomm. To start to pry this
problem apart, this patch does the following:
- Convert all debug UART drivers to define two macros:
- waituartcts with the clear semantic to wait for CTS
to be asserted
- waituarttxrdy with the clear semantic to wait for the TX
capability of the UART to be ready
- When doing this take care to assign the right function to
each drivers macro, so they now do exactly the above.
- Update the three sites in the kernel invoking the waituart
macro to call waituartcts/waituarttxrdy in sequence, so that
the functional impact on the kernel should be zero.
After this we can start to change the code sites using this
code to do the right thing.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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The debug macros debug_reloc_start and debug_reloc_end were
rendered unused in commit 6d7d0ae51574943bf571d269da3243257a2d15db
"ARM: 6750/1: improvements to compressed/head.S".
Later on a different debug macro named dbgkc was introduced
in commit f3c899927e19d1be39818145efc39ea27b8efc69
"ARM: 8786/1: Debug kernel copy by printing".
Delete the dead debug code.
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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This is commit fdfeff0f9e3d ("arm64: hw_breakpoint: Handle inexact
watchpoint addresses") but ported to arm32, which has the same
problem.
This problem was found by Android CTS tests, notably the
"watchpoint_imprecise" test [1]. I tested locally against a copycat
(simplified) version of the test though.
[1] https://android.googlesource.com/platform/bionic/+/master/tests/sys_ptrace_test.cpp
Link: https://lkml.kernel.org/r/20191019111216.1.I82eae759ca6dc28a245b043f485ca490e3015321@changeid
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC updates from Vineet Gupta:
"The bulk of ARC pull request is removal of EZChip NPS platform which
was suffering from constant bitrot. In recent years EZChip has gone
though multiple successive acquisitions and I guess things and people
move on. I would like to take this opportunity to recognize and thank
all those good folks (Gilad, Noam, Ofer...) for contributing major
bits to ARC port (SMP, Big Endian).
Summary:
- drop support for EZChip NPS platform
- misc other fixes"
* tag 'arc-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
arc: include/asm: fix typos of "themselves"
ARC: SMP: fix typo and use "come up" instead of "comeup"
ARC: [dts] fix the errors detected by dtbs_check
arc: plat-hsdk: fix kconfig dependency warning when !RESET_CONTROLLER
ARC: [plat-eznps]: Drop support for EZChip NPS platform
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Fix copy/paste spello of "themselves" in 3 places.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: linux-snps-arc@lists.infradead.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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When a secondary CPU fails to come up, there is a missing space in the
log:
Timeout: CPU1 FAILED to comeup !!!
Fix it.
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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xxx/arc/boot/dts/axs101.dt.yaml: dw-apb-ictl@e0012000: $nodename:0: \
'dw-apb-ictl@e0012000' does not match '^interrupt-controller(@[0-9a-f,]+)*$'
From schema: xxx/interrupt-controller/snps,dw-apb-ictl.yaml
The node name of the interrupt controller must start with
"interrupt-controller" instead of "dw-apb-ictl".
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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When ARC_SOC_HSDK is enabled and RESET_CONTROLLER is disabled, it results
in the following Kbuild warning:
WARNING: unmet direct dependencies detected for RESET_HSDK
Depends on [n]: RESET_CONTROLLER [=n] && HAS_IOMEM [=y] && (ARC_SOC_HSDK [=y] || COMPILE_TEST [=n])
Selected by [y]:
- ARC_SOC_HSDK [=y] && ISA_ARCV2 [=y]
The reason is that ARC_SOC_HSDK selects RESET_HSDK without depending on or
selecting RESET_CONTROLLER while RESET_HSDK is subordinate to
RESET_CONTROLLER.
Honor the kconfig menu hierarchy to remove kconfig dependency warnings.
Fixes: a528629dfd3b ("ARC: [plat-hsdk] select CONFIG_RESET_HSDK from Kconfig")
Signed-off-by: Necip Fazil Yildiran <fazilyildiran@gmail.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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NPS customers are no longer doing active development, as evident from
rand config build failures reported in recent times, so drop support
for NPS platform.
Tested-by: kernel test robot <lkp@intel.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Palmer Dabbelt:
"A handful of cleanups and new features:
- A handful of cleanups for our page fault handling
- Improvements to how we fill out cacheinfo
- Support for EFI-based systems"
* tag 'riscv-for-linus-5.10-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (22 commits)
RISC-V: Add page table dump support for uefi
RISC-V: Add EFI runtime services
RISC-V: Add EFI stub support.
RISC-V: Add PE/COFF header for EFI stub
RISC-V: Implement late mapping page table allocation functions
RISC-V: Add early ioremap support
RISC-V: Move DT mapping outof fixmap
RISC-V: Fix duplicate included thread_info.h
riscv/mm/fault: Set FAULT_FLAG_INSTRUCTION flag in do_page_fault()
riscv/mm/fault: Fix inline placement in vmalloc_fault() declaration
riscv: Add cache information in AUX vector
riscv: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO
riscv: Set more data to cacheinfo
riscv/mm/fault: Move access error check to function
riscv/mm/fault: Move FAULT_FLAG_WRITE handling in do_page_fault()
riscv/mm/fault: Simplify mm_fault_error()
riscv/mm/fault: Move fault error handling to mm_fault_error()
riscv/mm/fault: Simplify fault error handling
riscv/mm/fault: Move vmalloc fault handling to vmalloc_fault()
riscv/mm/fault: Move bad area handling to bad_area()
...
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Extend the current page table dump support in RISC-V to include efi
pages as well.
Here is the output of efi runtime page table mappings.
---[ UEFI runtime start ]---
0x0000000020002000-0x0000000020003000 0x00000000be732000 4K PTE D A . . . W R V
0x0000000020018000-0x0000000020019000 0x00000000be738000 4K PTE D A . . . W R V
0x000000002002c000-0x000000002002d000 0x00000000be73c000 4K PTE D A . . . W R V
0x0000000020031000-0x0000000020032000 0x00000000bff61000 4K PTE D A . . X W R V
---[ UEFI runtime end ]---
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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