arm64.nobti [ARM64] Unconditionally disable Branch Target
Identification support
+ arm64.nogcs [ARM64] Unconditionally disable Guarded Control Stack
+ support
+
arm64.nomops [ARM64] Unconditionally disable Memory Copy and Memory
Set instructions support
0: no polling (default)
thp_anon= [KNL]
- Format: <size>,<size>[KMG]:<state>;<size>-<size>[KMG]:<state>
+ Format: <size>[KMG],<size>[KMG]:<state>;<size>[KMG]-<size>[KMG]:<state>
state is one of "always", "madvise", "never" or "inherit".
Control the default behavior of the system with respect
to anonymous transparent hugepages.
torture.verbose_sleep_duration= [KNL]
Duration of each verbose-printk() sleep in jiffies.
+ tpm.disable_pcr_integrity= [HW,TPM]
+ Do not protect PCR registers from unintended physical
+ access, or interposers in the bus by the means of
+ having an integrity protected session wrapped around
+ TPM2_PCR_Extend command. Consider this in a situation
+ where TPM is heavily utilized by IMA, thus protection
+ causing a major performance hit, and the space where
+ machines are deployed is by other means guarded.
+
tpm_suspend_pcr=[HW,TPM]
Format: integer pcr id
Specify that at suspend time, the tpm driver
S: Maintained
F: drivers/net/ethernet/alteon/acenic*
-ACER ASPIRE 1 EMBEDDED CONTROLLER DRIVER
-S: Maintained
-F: Documentation/devicetree/bindings/platform/acer,aspire1-ec.yaml
-F: drivers/platform/arm64/acer-aspire1-ec.c
-
ACER ASPIRE ONE TEMPERATURE AND FAN DRIVER
ALPHA PORT
S: Odd Fixes
F: drivers/hid/amd-sfh-hid/
AMD SPI DRIVER
-S: Maintained
+S: Supported
F: drivers/spi/spi-amd.c
AMD XGBE DRIVER
ARM AND ARM64 SoC SUB-ARCHITECTURES (COMMON PARTS)
S: Maintained
P: Documentation/process/maintainer-soc.rst
C: irc://irc.libera.chat/armlinux
S: Maintained
F: arch/arm/mach-ep93xx/ts72xx.c
-ARM/CIRRUS LOGIC CLPS711X ARM ARCHITECTURE
-S: Odd Fixes
-N: clps711x
-
ARM/CIRRUS LOGIC EP93XX ARM ARCHITECTURE
F: Documentation/devicetree/bindings/bus/qcom*
F: Documentation/devicetree/bindings/cache/qcom,llcc.yaml
F: Documentation/devicetree/bindings/firmware/qcom,scm.yaml
-F: Documentation/devicetree/bindings/reserved-memory/qcom
+F: Documentation/devicetree/bindings/reserved-memory/qcom*
F: Documentation/devicetree/bindings/soc/qcom/
F: arch/arm/boot/dts/qcom/
F: arch/arm/configs/qcom_defconfig
AXI PWM GENERATOR
S: Supported
W: https://ez.analog.com/linux-software-drivers
F: include/linux/backlight.h
F: include/linux/pwm_backlight.h
-BAIKAL-T1 PVT HARDWARE MONITOR DRIVER
-S: Supported
-F: Documentation/devicetree/bindings/hwmon/baikal,bt1-pvt.yaml
-F: Documentation/hwmon/bt1-pvt.rst
-F: drivers/hwmon/bt1-pvt.[ch]
-
BARCO P50 GPIO DRIVER
S: Maintained
-W: http://www.linux-mips.org/wiki/DECstation
F: arch/mips/dec/
F: arch/mips/include/asm/dec/
F: arch/mips/include/asm/mach-dec/
DESIGNWARE EDMA CORE IP DRIVER
S: Maintained
F: drivers/dma/dw-edma/
F: drivers/edac/highbank*
EDAC-CAVIUM OCTEON
-S: Supported
+S: Maintained
F: drivers/edac/octeon_edac*
EDAC-CAVIUM THUNDERX
F: include/linux/gpio.h
F: include/linux/gpio/
F: include/linux/of_gpio.h
+K: (devm_)?gpio_(request|free|direction|get|set)
GPIO UAPI
F: include/uapi/linux/gpio.h
F: tools/gpio/
-GRE DEMULTIPLEXER DRIVER
-S: Maintained
-F: include/net/gre.h
-F: net/ipv4/gre_demux.c
-F: net/ipv4/gre_offload.c
-
GRETH 10/100/1G Ethernet MAC device driver
F: Documentation/mm/vmemmap_dedup.rst
F: fs/hugetlbfs/
F: include/linux/hugetlb.h
+F: include/trace/events/hugetlbfs.h
F: mm/hugetlb.c
F: mm/hugetlb_vmemmap.c
F: mm/hugetlb_vmemmap.h
F: security/integrity/ima/
INTEGRITY POLICY ENFORCEMENT (IPE)
-M: Fan Wu <wufan@linux.microsoft.com>
+M: Fan Wu <wufan@kernel.org>
S: Supported
-T: git https://github.com/microsoft/ipe.git
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipe.git
F: Documentation/admin-guide/LSM/ipe.rst
F: Documentation/security/ipe.rst
F: scripts/ipe/
F: drivers/crypto/intel/keembay/ocs-hcu.c
F: drivers/crypto/intel/keembay/ocs-hcu.h
+INTEL LA JOLLA COVE ADAPTER (LJCA) USB I/O EXPANDER DRIVERS
+S: Maintained
+F: drivers/gpio/gpio-ljca.c
+F: drivers/i2c/busses/i2c-ljca.c
+F: drivers/spi/spi-ljca.c
+F: drivers/usb/misc/usb-ljca.c
+F: include/linux/usb/ljca.h
+
INTEL MANAGEMENT ENGINE (mei)
F: drivers/iio/gyro/mpu3050*
IOC3 ETHERNET DRIVER
S: Maintained
F: drivers/net/ethernet/sgi/ioc3-eth.c
S: Maintained
+B: https://bugzilla.kernel.org/buglist.cgi?component=Sanitizers&product=Memory%20Management
F: Documentation/dev-tools/kasan.rst
F: arch/*/include/asm/*kasan.h
F: arch/*/mm/kasan_init*
S: Maintained
+B: https://bugzilla.kernel.org/buglist.cgi?component=Sanitizers&product=Memory%20Management
F: Documentation/dev-tools/kcov.rst
F: include/linux/kcov.h
F: include/uapi/linux/kcov.h
F: drivers/ata/pata_arasan_cf.c
F: include/linux/pata_arasan_cf_data.h
-LIBATA PATA DRIVERS
-F: drivers/ata/ata_*.c
-F: drivers/ata/pata_*.c
-
LIBATA PATA FARADAY FTIDE010 AND GEMINI SATA BRIDGE DRIVERS
F: drivers/ata/libahci_platform.c
F: include/linux/ahci_platform.h
-LIBATA SATA AHCI SYNOPSYS DWC CONTROLLER DRIVER
-S: Maintained
-F: Documentation/devicetree/bindings/ata/baikal,bt1-ahci.yaml
-F: Documentation/devicetree/bindings/ata/snps,dwc-ahci.yaml
-F: drivers/ata/ahci_dwc.c
-
LIBATA SATA PROMISE TX2/TX4 CONTROLLER DRIVER
F: Documentation/networking/device_drivers/ethernet/marvell/octeontx2.rst
F: drivers/net/ethernet/marvell/octeontx2/af/
+ MARVELL PEM PMU DRIVER
+ S: Supported
+ F: drivers/perf/marvell_pem_pmu.c
+
MARVELL PRESTERA ETHERNET SWITCH DRIVER
S: Supported
F: drivers/media/platform/nxp/imx-pxp.[ch]
MEDIA DRIVERS FOR ASCOT2E
S: Supported
W: https://linuxtv.org
F: drivers/media/dvb-frontends/cxd2099*
MEDIA DRIVERS FOR CXD2841ER
S: Supported
W: https://linuxtv.org
F: drivers/media/platform/nxp/imx8mq-mipi-csi2.c
MEDIA DRIVERS FOR HELENE
-M: Abylay Ospan <aospan@netup.ru>
+M: Abylay Ospan <aospan@amazon.com>
S: Supported
W: https://linuxtv.org
F: drivers/media/dvb-frontends/helene*
MEDIA DRIVERS FOR HORUS3A
S: Supported
W: https://linuxtv.org
F: drivers/media/dvb-frontends/horus3a*
MEDIA DRIVERS FOR LNBH25
S: Supported
W: https://linuxtv.org
F: drivers/media/dvb-frontends/mxl5xx*
MEDIA DRIVERS FOR NETUP PCI UNIVERSAL DVB devices
S: Supported
W: https://linuxtv.org
MEMORY MAPPING
-R: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
+R: Jann Horn <jannh@google.com>
S: Maintained
W: http://www.linux-mm.org
F: include/linux/mtd/
F: include/uapi/mtd/
-MEMSENSING MICROSYSTEMS MSA311 DRIVER
-S: Maintained
-F: Documentation/devicetree/bindings/iio/accel/memsensing,msa311.yaml
-F: drivers/iio/accel/msa311.c
-
MEN A21 WATCHDOG DRIVER
MICROCHIP AUDIO ASOC DRIVERS
S: Supported
F: Documentation/devicetree/bindings/sound/atmel*
MICROCHIP MCP16502 PMIC DRIVER
S: Supported
F: Documentation/devicetree/bindings/regulator/microchip,mcp16502.yaml
MICROCHIP POLARFIRE FPGA DRIVERS
S: Supported
F: Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml
MICROCHIP SSC DRIVER
S: Supported
F: Documentation/devicetree/bindings/misc/atmel-ssc.txt
S: Maintained
-W: http://www.linux-mips.org/
Q: https://patchwork.kernel.org/project/linux-mips/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git
F: Documentation/devicetree/bindings/mips/
F: drivers/platform/mips/
F: include/dt-bindings/mips/
-MIPS BAIKAL-T1 PLATFORM
-S: Supported
-F: Documentation/devicetree/bindings/bus/baikal,bt1-*.yaml
-F: Documentation/devicetree/bindings/clock/baikal,bt1-*.yaml
-F: drivers/bus/bt1-*.c
-F: drivers/clk/baikal-t1/
-F: drivers/memory/bt1-l2-ctl.c
-F: drivers/mtd/maps/physmap-bt1-rom.[ch]
-
MIPS BOSTON DEVELOPMENT BOARD
MIPS CORE DRIVERS
S: Supported
F: drivers/bus/mips_cdmm.c
F: tools/testing/selftests/net/netfilter/
NETROM NETWORK LAYER
-S: Maintained
+S: Orphan
W: https://linux-ax25.in-berlin.de
F: include/net/netrom.h
F: include/uapi/linux/netrom.h
F: net/core/drop_monitor.c
NETWORKING DRIVERS
NETWORKING [DSA]
S: Maintained
F: Documentation/devicetree/bindings/net/dsa/
S: Maintained
P: Documentation/process/maintainer-netdev.rst
F: lib/net_utils.c
F: lib/random32.c
F: net/
+F: samples/pktgen/
F: tools/net/
F: tools/testing/selftests/net/
X: Documentation/networking/mac80211-injection.rst
F: include/linux/ntb_transport.h
F: tools/testing/selftests/ntb/
-NTB IDT DRIVER
-S: Supported
-F: drivers/ntb/hw/idt/
-
NTB INTEL DRIVER
F: include/linux/pps*.h
F: include/uapi/linux/pps.h
-PPTP DRIVER
-S: Maintained
-W: http://sourceforge.net/projects/accel-pptp
-F: drivers/net/ppp/pptp.c
-
PRESSURE STALL INFORMATION (PSI)
F: Documentation/tools/rtla/
F: tools/tracing/rtla/
+Real-time Linux (PREEMPT_RT)
+S: Supported
+K: PREEMPT_RT
+
REALTEK AUDIO CODECS
S: Maintained
F: drivers/i2c/busses/i2c-emev2.c
RENESAS ETHERNET AVB DRIVER
+S: Supported
F: Documentation/devicetree/bindings/net/renesas,etheravb.yaml
F: drivers/net/ethernet/renesas/Kconfig
F: drivers/net/ethernet/renesas/Makefile
F: drivers/i2c/busses/i2c-sh_mobile.c
RENESAS R-CAR SATA DRIVER
S: Supported
F: drivers/i2c/busses/i2c-rzv2m.c
RENESAS SUPERH ETHERNET DRIVER
+S: Supported
F: Documentation/devicetree/bindings/net/renesas,ether.yaml
F: drivers/net/ethernet/renesas/Kconfig
F: drivers/net/ethernet/renesas/Makefile
S: Maintained
Q: https://patchwork.kernel.org/project/linux-riscv/list/
T: git https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux.git/
-F: Documentation/devicetree/bindings/riscv/
-F: arch/riscv/boot/dts/
-X: arch/riscv/boot/dts/allwinner/
-X: arch/riscv/boot/dts/renesas/
-X: arch/riscv/boot/dts/sophgo/
-X: arch/riscv/boot/dts/thead/
+F: arch/riscv/boot/dts/canaan/
+F: arch/riscv/boot/dts/microchip/
+F: arch/riscv/boot/dts/sifive/
+F: arch/riscv/boot/dts/starfive/
RISC-V PMU DRIVERS
F: include/linux/mfd/rohm-shared.h
ROSE NETWORK LAYER
-S: Maintained
+S: Orphan
W: https://linux-ax25.in-berlin.de
F: include/net/rose.h
F: include/uapi/linux/rose.h
S: Supported
F: drivers/s390/cio/
+S390 CRYPTO MODULES, PRNG DRIVER, ARCH RANDOM
+S: Supported
+F: arch/s390/crypto/
+F: arch/s390/include/asm/archrandom.h
+F: arch/s390/include/asm/cpacf.h
+
S390 DASD DRIVER
F: drivers/s390/block/dasd*
F: include/linux/dasd_mod.h
+S390 HWRANDOM TRNG DRIVER
+S: Supported
+F: drivers/char/hw_random/s390-trng.c
+
S390 IOMMU (PCI)
F: drivers/vfio/pci/vfio_pci_zdev.c
F: include/uapi/linux/vfio_zdev.h
-S390 ZCRYPT DRIVER
+S390 ZCRYPT AND PKEY DRIVER AND AP BUS
S: Supported
+F: arch/s390/include/asm/ap.h
+F: arch/s390/include/asm/pkey.h
+F: arch/s390/include/asm/trace/zcrypt.h
+F: arch/s390/include/uapi/asm/pkey.h
+F: arch/s390/include/uapi/asm/zcrypt.h
F: drivers/s390/crypto/
S390 ZFCP DRIVER
P: https://github.com/LinuxSecurityModule/kernel/blob/main/README.md
T: git https://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm.git
+F: include/linux/lsm/
F: include/linux/lsm_audit.h
F: include/linux/lsm_hook_defs.h
F: include/linux/lsm_hooks.h
SOFTWARE RAID (Multiple Disks) SUPPORT
S: Supported
Q: https://patchwork.kernel.org/project/linux-raid/list/
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/song/md.git
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/mdraid/linux.git
F: drivers/md/Kconfig
F: drivers/md/Makefile
F: drivers/md/md*
W: https://github.com/thesofproject/linux/
F: sound/soc/sof/
+SOUND - GENERIC SOUND CARD (Simple-Audio-Card, Audio-Graph-Card)
+S: Supported
+F: sound/soc/generic/
+F: include/sound/simple_card*
+F: Documentation/devicetree/bindings/sound/simple-card.yaml
+F: Documentation/devicetree/bindings/sound/audio-graph*.yaml
+
SOUNDWIRE SUBSYSTEM
SPEAR PLATFORM/CLOCK/PINCTRL SUPPORT
S: Maintained
W: http://www.st.com/spear
F: arch/arm/boot/dts/st/spear*
SYNOPSYS DESIGNWARE APB GPIO DRIVER
S: Maintained
F: Documentation/devicetree/bindings/gpio/snps,dw-apb-gpio.yaml
F: drivers/gpio/gpio-dwapb.c
-SYNOPSYS DESIGNWARE APB SSI DRIVER
-S: Supported
-F: Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml
-F: drivers/spi/spi-dw*
-
SYNOPSYS DESIGNWARE AXI DMAC DRIVER
S: Maintained
F: drivers/iio/adc/ti-lmp92064.c
TI PCM3060 ASoC CODEC DRIVER
-M: Kirill Marinushkin <kmarinushkin@birdec.com>
+M: Kirill Marinushkin <k.marinushkin@gmail.com>
S: Maintained
F: Documentation/devicetree/bindings/sound/pcm3060.txt
TURBOCHANNEL SUBSYSTEM
S: Maintained
-Q: http://patchwork.linux-mips.org/project/linux-mips/list/
+Q: https://patchwork.kernel.org/project/linux-mips/list/
F: drivers/tc/
F: include/linux/tc.h
S: Maintained
F: drivers/hid/hid-udraw-ps3.c
-UFS FILESYSTEM
-S: Maintained
-F: Documentation/admin-guide/ufs.rst
-F: fs/ufs/
-
UHID USERSPACE HID IO DRIVER
S: Maintained
+B: https://github.com/xairy/raw-gadget/issues
F: Documentation/usb/raw-gadget.rst
F: drivers/usb/gadget/legacy/raw_gadget.c
F: include/uapi/linux/usb/raw_gadget.h
VMA
-R: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
+R: Jann Horn <jannh@google.com>
S: Maintained
W: https://www.linux-mm.org
select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2
select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
select ARCH_HAS_CACHE_LINE_SIZE
+ select ARCH_HAS_CC_PLATFORM
select ARCH_HAS_CURRENT_STACK_POINTER
select ARCH_HAS_DEBUG_VIRTUAL
select ARCH_HAS_DEBUG_VM_PGTABLE
select ARCH_HAS_MEM_ENCRYPT
select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS
select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE
+ select ARCH_HAS_NONLEAF_PMD_YOUNG if ARM64_HAFT
select ARCH_HAS_PTE_DEVMAP
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_HW_PTE_YOUNG
select ARCH_HAS_SETUP_DMA_OPS
select ARCH_HAS_SET_DIRECT_MAP
select ARCH_HAS_SET_MEMORY
+ select ARCH_HAS_MEM_ENCRYPT
+ select ARCH_HAS_FORCE_DMA_UNENCRYPTED
select ARCH_STACKWALK
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_STRICT_MODULE_RWX
config ARCH_SUPPORTS_CRASH_DUMP
def_bool y
+config ARCH_DEFAULT_CRASH_DUMP
+ def_bool y
+
config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION
def_bool CRASH_RESERVE
if the cpu does not implement the feature.
endmenu # "ARMv8.7 architectural features"
+ config AS_HAS_MOPS
+ def_bool $(as-instr,.arch_extension mops)
+
menu "ARMv8.9 architectural features"
config ARM64_POE
int
default 3
+ config ARM64_HAFT
+ bool "Support for Hardware managed Access Flag for Table Descriptors"
+ depends on ARM64_HW_AFDBM
+ default y
+ help
+ The ARMv8.9/ARMv9.5 introduces the feature Hardware managed Access
+ Flag for Table descriptors. When enabled an architectural executed
+ memory access will update the Access Flag in each Table descriptor
+ which is accessed during the translation table walk and for which
+ the Access Flag is 0. The Access Flag of the Table descriptor use
+ the same bit of PTE_AF.
+
+ The feature will only be enabled if all the CPUs in the system
+ support this feature. If unsure, say Y.
+
endmenu # "ARMv8.9 architectural features"
+ menu "v9.4 architectural features"
+
+ config ARM64_GCS
+ bool "Enable support for Guarded Control Stack (GCS)"
+ default y
+ select ARCH_HAS_USER_SHADOW_STACK
+ select ARCH_USES_HIGH_VMA_FLAGS
+ depends on !UPROBES
+ help
+ Guarded Control Stack (GCS) provides support for a separate
+ stack with restricted access which contains only return
+ addresses. This can be used to harden against some attacks
+ by comparing return address used by the program with what is
+ stored in the GCS, and may also be used to efficiently obtain
+ the call stack for applications such as profiling.
+
+ The feature is detected at runtime, and will remain disabled
+ if the system does not implement the feature.
+
+ endmenu # "v9.4 architectural features"
+
config ARM64_SVE
bool "ARM Scalable Vector Extension support"
default y
bool "ARM Scalable Matrix Extension support"
default y
depends on ARM64_SVE
+ depends on BROKEN
help
The Scalable Matrix Extension (SME) is an extension to the AArch64
execution state which utilises a substantial subset of the SVE
#ifndef BUILD_VDSO
#include <linux/compiler.h>
+#include <linux/fs.h>
+#include <linux/shmem_fs.h>
#include <linux/types.h>
static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot,
}
#define arch_calc_vm_prot_bits(prot, pkey) arch_calc_vm_prot_bits(prot, pkey)
-static inline unsigned long arch_calc_vm_flag_bits(unsigned long flags)
+static inline unsigned long arch_calc_vm_flag_bits(struct file *file,
+ unsigned long flags)
{
/*
* Only allow MTE on anonymous mappings as these are guaranteed to be
* backed by tags-capable memory. The vm_flags may be overridden by a
* filesystem supporting MTE (RAM-based).
*/
-- if (system_supports_mte() &&
- ((flags & MAP_ANONYMOUS) || shmem_file(file)))
- (flags & (MAP_ANONYMOUS | MAP_HUGETLB)))
-- return VM_MTE_ALLOWED;
++ if (system_supports_mte()) {
++ if (flags & (MAP_ANONYMOUS | MAP_HUGETLB))
++ return VM_MTE_ALLOWED;
++ if (shmem_file(file))
++ return VM_MTE_ALLOWED;
++ }
return 0;
}
-#define arch_calc_vm_flag_bits(flags) arch_calc_vm_flag_bits(flags)
+#define arch_calc_vm_flag_bits(file, flags) arch_calc_vm_flag_bits(file, flags)
static inline bool arch_validate_prot(unsigned long prot,
unsigned long addr __always_unused)
static inline bool arch_validate_flags(unsigned long vm_flags)
{
- if (!system_supports_mte())
- return true;
+ if (system_supports_mte()) {
+ /*
+ * only allow VM_MTE if VM_MTE_ALLOWED has been set
+ * previously
+ */
+ if ((vm_flags & VM_MTE) && !(vm_flags & VM_MTE_ALLOWED))
+ return false;
+ }
+
+ if (system_supports_gcs() && (vm_flags & VM_SHADOW_STACK)) {
+ /* An executable GCS isn't a good idea. */
+ if (vm_flags & VM_EXEC)
+ return false;
+
+ /* The memory management core should prevent this */
+ VM_WARN_ON(vm_flags & VM_SHARED);
+ }
+
+ return true;
- /* only allow VM_MTE if VM_MTE_ALLOWED has been set previously */
- return !(vm_flags & VM_MTE) || (vm_flags & VM_MTE_ALLOWED);
}
#define arch_validate_flags(vm_flags) arch_validate_flags(vm_flags)
#include <linux/ftrace.h>
#include <linux/kexec.h>
#include <linux/mm.h>
- #include <linux/dma-mapping.h>
#include <linux/kvm_host.h>
- #include <linux/preempt.h>
#include <linux/suspend.h>
#include <asm/cpufeature.h>
#include <asm/fixmap.h>
#include <asm/thread_info.h>
#include <asm/memory.h>
- #include <asm/signal32.h>
#include <asm/smp_plat.h>
#include <asm/suspend.h>
#include <linux/kbuild.h>
int main(void)
{
- DEFINE(TSK_ACTIVE_MM, offsetof(struct task_struct, active_mm));
- BLANK();
DEFINE(TSK_TI_CPU, offsetof(struct task_struct, thread_info.cpu));
DEFINE(TSK_TI_FLAGS, offsetof(struct task_struct, thread_info.flags));
DEFINE(TSK_TI_PREEMPT, offsetof(struct task_struct, thread_info.preempt_count));
DEFINE(S_PSTATE, offsetof(struct pt_regs, pstate));
DEFINE(S_SYSCALLNO, offsetof(struct pt_regs, syscallno));
DEFINE(S_SDEI_TTBR1, offsetof(struct pt_regs, sdei_ttbr1));
- DEFINE(S_PMR_SAVE, offsetof(struct pt_regs, pmr_save));
+ DEFINE(S_PMR, offsetof(struct pt_regs, pmr));
DEFINE(S_STACKFRAME, offsetof(struct pt_regs, stackframe));
+ DEFINE(S_STACKFRAME_TYPE, offsetof(struct pt_regs, stackframe.type));
DEFINE(PT_REGS_SIZE, sizeof(struct pt_regs));
BLANK();
#ifdef CONFIG_DYNAMIC_FTRACE_WITH_ARGS
DEFINE(FREGS_SIZE, sizeof(struct ftrace_regs));
BLANK();
#endif
- #ifdef CONFIG_COMPAT
- DEFINE(COMPAT_SIGFRAME_REGS_OFFSET, offsetof(struct compat_sigframe, uc.uc_mcontext.arm_r0));
- DEFINE(COMPAT_RT_SIGFRAME_REGS_OFFSET, offsetof(struct compat_rt_sigframe, sig.uc.uc_mcontext.arm_r0));
- BLANK();
- #endif
- DEFINE(MM_CONTEXT_ID, offsetof(struct mm_struct, context.id.counter));
- BLANK();
- DEFINE(VMA_VM_MM, offsetof(struct vm_area_struct, vm_mm));
- DEFINE(VMA_VM_FLAGS, offsetof(struct vm_area_struct, vm_flags));
- BLANK();
- DEFINE(VM_EXEC, VM_EXEC);
- BLANK();
- DEFINE(PAGE_SZ, PAGE_SIZE);
- BLANK();
- DEFINE(DMA_TO_DEVICE, DMA_TO_DEVICE);
- DEFINE(DMA_FROM_DEVICE, DMA_FROM_DEVICE);
- BLANK();
- DEFINE(PREEMPT_DISABLE_OFFSET, PREEMPT_DISABLE_OFFSET);
- BLANK();
DEFINE(CPU_BOOT_TASK, offsetof(struct secondary_data, task));
BLANK();
DEFINE(FTR_OVR_VAL_OFFSET, offsetof(struct arm64_ftr_override, val));
DEFINE(NVHE_INIT_HCR_EL2, offsetof(struct kvm_nvhe_init_params, hcr_el2));
DEFINE(NVHE_INIT_VTTBR, offsetof(struct kvm_nvhe_init_params, vttbr));
DEFINE(NVHE_INIT_VTCR, offsetof(struct kvm_nvhe_init_params, vtcr));
+ DEFINE(NVHE_INIT_TMP, offsetof(struct kvm_nvhe_init_params, tmp));
#endif
#ifdef CONFIG_CPU_PM
DEFINE(CPU_CTX_SP, offsetof(struct cpu_suspend_ctx, sp));
* fpsimd_save_user_state() or memory corruption, we
* should always record an explicit format
* when we save. We always at least have the
- * memory allocated for FPSMID registers so
+ * memory allocated for FPSIMD registers so
* try that and hope for the best.
*/
WARN_ON_ONCE(1);
} else {
fpsimd_to_sve(current);
current->thread.fp_type = FP_STATE_SVE;
+ fpsimd_flush_task_state(current);
}
}
may_block));
}
-void kvm_stage2_unmap_range(struct kvm_s2_mmu *mmu, phys_addr_t start, u64 size)
+void kvm_stage2_unmap_range(struct kvm_s2_mmu *mmu, phys_addr_t start,
+ u64 size, bool may_block)
{
- __unmap_stage2_range(mmu, start, size, true);
+ __unmap_stage2_range(mmu, start, size, may_block);
}
void kvm_stage2_flush_range(struct kvm_s2_mmu *mmu, phys_addr_t addr, phys_addr_t end)
if (!(vma->vm_flags & VM_PFNMAP)) {
gpa_t gpa = addr + (vm_start - memslot->userspace_addr);
- kvm_stage2_unmap_range(&kvm->arch.mmu, gpa, vm_end - vm_start);
+ kvm_stage2_unmap_range(&kvm->arch.mmu, gpa, vm_end - vm_start, true);
}
hva = vm_end;
} while (hva < reg_end);
kvm_for_each_memslot(memslot, bkt, slots)
stage2_unmap_memslot(kvm, memslot);
- kvm_nested_s2_unmap(kvm);
+ kvm_nested_s2_unmap(kvm, true);
write_unlock(&kvm->mmu_lock);
mmap_read_unlock(current->mm);
{
unsigned long i, nr_pages = size >> PAGE_SHIFT;
struct page *page = pfn_to_page(pfn);
+ struct folio *folio = page_folio(page);
if (!kvm_has_mte(kvm))
return;
+ if (folio_test_hugetlb(folio)) {
+ /* Hugetlb has MTE flags set on head page only */
+ if (folio_try_hugetlb_mte_tagging(folio)) {
+ for (i = 0; i < nr_pages; i++, page++)
+ mte_clear_page_tags(page_address(page));
+ folio_set_hugetlb_mte_tagged(folio);
+ }
+ return;
+ }
+
for (i = 0; i < nr_pages; i++, page++) {
if (try_page_mte_tagging(page)) {
mte_clear_page_tags(page_address(page));
(range->end - range->start) << PAGE_SHIFT,
range->may_block);
- kvm_nested_s2_unmap(kvm);
+ kvm_nested_s2_unmap(kvm, range->may_block);
return false;
}
phys_addr_t size = slot->npages << PAGE_SHIFT;
write_lock(&kvm->mmu_lock);
- kvm_stage2_unmap_range(&kvm->arch.mmu, gpa, size);
- kvm_nested_s2_unmap(kvm);
+ kvm_stage2_unmap_range(&kvm->arch.mmu, gpa, size, true);
+ kvm_nested_s2_unmap(kvm, true);
write_unlock(&kvm->mmu_lock);
}
depends on AS_WRUSS
depends on X86_64
select ARCH_USES_HIGH_VMA_FLAGS
+ select ARCH_HAS_USER_SHADOW_STACK
select X86_CET
help
Shadow stack protection is a hardware feature that detects function
config ARCH_SUPPORTS_CRASH_DUMP
def_bool X86_64 || (X86_32 && HIGHMEM)
+config ARCH_DEFAULT_CRASH_DUMP
+ def_bool y
+
config ARCH_SUPPORTS_CRASH_HOTPLUG
def_bool y
config ADDRESS_MASKING
bool "Linear Address Masking support"
depends on X86_64
+ depends on COMPILE_TEST || !CPU_MITIGATIONS # wait for LASS
help
Linear Address Masking (LAM) modifies the checking that is applied
to 64-bit linear addresses, allowing software to use of the
#include <linux/uaccess.h>
#include <linux/sched/mm.h>
+#define CREATE_TRACE_POINTS
+#include <trace/events/hugetlbfs.h>
+
static const struct address_space_operations hugetlbfs_aops;
static const struct file_operations hugetlbfs_file_operations;
static const struct inode_operations hugetlbfs_dir_inode_operations;
* way when do_mmap unwinds (may be important on powerpc
* and ia64).
*/
- vm_flags_set(vma, VM_HUGETLB | VM_DONTEXPAND);
+ vm_flags_set(vma, VM_HUGETLB | VM_DONTEXPAND | VM_MTE_ALLOWED);
vma->vm_ops = &hugetlb_vm_ops;
ret = seal_check_write(info->seals, vma);
{
struct resv_map *resv_map;
+ trace_hugetlbfs_evict_inode(inode);
remove_inode_hugepages(inode, 0, LLONG_MAX);
/*
if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
return -EOPNOTSUPP;
- if (mode & FALLOC_FL_PUNCH_HOLE)
- return hugetlbfs_punch_hole(inode, offset, len);
+ if (mode & FALLOC_FL_PUNCH_HOLE) {
+ error = hugetlbfs_punch_hole(inode, offset, len);
+ goto out_nolock;
+ }
/*
* Default preallocate case.
inode_set_ctime_current(inode);
out:
inode_unlock(inode);
+
+out_nolock:
+ trace_hugetlbfs_fallocate(inode, mode, offset, len, error);
return error;
}
if (error)
return error;
+ trace_hugetlbfs_setattr(inode, dentry, attr);
+
if (ia_valid & ATTR_SIZE) {
loff_t oldsize = inode->i_size;
loff_t newsize = attr->ia_size;
break;
}
lockdep_annotate_inode_mutex_key(inode);
+ trace_hugetlbfs_alloc_inode(inode, dir, mode);
} else {
if (resv_map)
kref_put(&resv_map->refs, resv_map_release);
static void hugetlbfs_free_inode(struct inode *inode)
{
+ trace_hugetlbfs_free_inode(inode);
kmem_cache_free(hugetlbfs_inode_cachep, HUGETLBFS_I(inode));
}
{
/*
* Don't forget to update Documentation/ on changes.
+ *
+ * The length of the second argument of mnemonics[]
+ * needs to be 3 instead of previously set 2
+ * (i.e. from [BITS_PER_LONG][2] to [BITS_PER_LONG][3])
+ * to avoid spurious
+ * -Werror=unterminated-string-initialization warning
+ * with GCC 15
*/
- static const char mnemonics[BITS_PER_LONG][2] = {
+ static const char mnemonics[BITS_PER_LONG][3] = {
/*
* In case if we meet a flag we don't know about.
*/
#ifdef CONFIG_HAVE_ARCH_USERFAULTFD_MINOR
[ilog2(VM_UFFD_MINOR)] = "ui",
#endif /* CONFIG_HAVE_ARCH_USERFAULTFD_MINOR */
- #ifdef CONFIG_X86_USER_SHADOW_STACK
+ #ifdef CONFIG_ARCH_HAS_USER_SHADOW_STACK
[ilog2(VM_SHADOW_STACK)] = "ss",
#endif
#if defined(CONFIG_64BIT) || defined(CONFIG_PPC32)
for (i = 0; i < BITS_PER_LONG; i++) {
if (!mnemonics[i][0])
continue;
- if (vma->vm_flags & (1UL << i)) {
- seq_putc(m, mnemonics[i][0]);
- seq_putc(m, mnemonics[i][1]);
- seq_putc(m, ' ');
- }
+ if (vma->vm_flags & (1UL << i))
+ seq_printf(m, "%s ", mnemonics[i]);
}
seq_putc(m, '\n');
}
return -EFAULT;
if (!arg->vec && arg->vec_len)
return -EINVAL;
+ if (UINT_MAX == SIZE_MAX && arg->vec_len > SIZE_MAX)
+ return -EINVAL;
if (arg->vec && !access_ok((void __user *)(long)arg->vec,
- arg->vec_len * sizeof(struct page_region)))
+ size_mul(arg->vec_len, sizeof(struct page_region))))
return -EFAULT;
/* Fixup default values */
#define VM_HIGH_ARCH_BIT_3 35 /* bit only usable on 64-bit architectures */
#define VM_HIGH_ARCH_BIT_4 36 /* bit only usable on 64-bit architectures */
#define VM_HIGH_ARCH_BIT_5 37 /* bit only usable on 64-bit architectures */
+ #define VM_HIGH_ARCH_BIT_6 38 /* bit only usable on 64-bit architectures */
#define VM_HIGH_ARCH_0 BIT(VM_HIGH_ARCH_BIT_0)
#define VM_HIGH_ARCH_1 BIT(VM_HIGH_ARCH_BIT_1)
#define VM_HIGH_ARCH_2 BIT(VM_HIGH_ARCH_BIT_2)
#define VM_HIGH_ARCH_3 BIT(VM_HIGH_ARCH_BIT_3)
#define VM_HIGH_ARCH_4 BIT(VM_HIGH_ARCH_BIT_4)
#define VM_HIGH_ARCH_5 BIT(VM_HIGH_ARCH_BIT_5)
+ #define VM_HIGH_ARCH_6 BIT(VM_HIGH_ARCH_BIT_6)
#endif /* CONFIG_ARCH_USES_HIGH_VMA_FLAGS */
#ifdef CONFIG_ARCH_HAS_PKEYS
* for more details on the guard size.
*/
# define VM_SHADOW_STACK VM_HIGH_ARCH_5
- #else
+ #endif
+
+ #if defined(CONFIG_ARM64_GCS)
+ /*
+ * arm64's Guarded Control Stack implements similar functionality and
+ * has similar constraints to shadow stacks.
+ */
+ # define VM_SHADOW_STACK VM_HIGH_ARCH_6
+ #endif
+
+ #ifndef VM_SHADOW_STACK
# define VM_SHADOW_STACK VM_NONE
#endif
struct page * __populate_section_memmap(unsigned long pfn,
unsigned long nr_pages, int nid, struct vmem_altmap *altmap,
struct dev_pagemap *pgmap);
-void pmd_init(void *addr);
void pud_init(void *addr);
+void pmd_init(void *addr);
+void kernel_pte_init(void *addr);
pgd_t *vmemmap_pgd_populate(unsigned long addr, int node);
p4d_t *vmemmap_p4d_populate(pgd_t *pgd, unsigned long addr, int node);
pud_t *vmemmap_pud_populate(p4d_t *p4d, unsigned long addr, int node);
}
#endif /* CONFIG_MEM_ALLOC_PROFILING */
+ int arch_get_shadow_stack_status(struct task_struct *t, unsigned long __user *status);
+ int arch_set_shadow_stack_status(struct task_struct *t, unsigned long status);
+ int arch_lock_shadow_stack_status(struct task_struct *t, unsigned long status);
+
#endif /* _LINUX_MM_H */
static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd)
{
- struct fd exe;
+ CLASS(fd, exe)(fd);
struct inode *inode;
int err;
- exe = fdget(fd);
- if (!fd_file(exe))
+ if (fd_empty(exe))
return -EBADF;
inode = file_inode(fd_file(exe));
* sure that this one is executable as well, to avoid breaking an
* overall picture.
*/
- err = -EACCES;
if (!S_ISREG(inode->i_mode) || path_noexec(&fd_file(exe)->f_path))
- goto exit;
+ return -EACCES;
err = file_permission(fd_file(exe), MAY_EXEC);
if (err)
- goto exit;
+ return err;
- err = replace_mm_exe_file(mm, fd_file(exe));
-exit:
- fdput(exe);
- return err;
+ return replace_mm_exe_file(mm, fd_file(exe));
}
/*
return -EINVAL;
}
+ int __weak arch_get_shadow_stack_status(struct task_struct *t, unsigned long __user *status)
+ {
+ return -EINVAL;
+ }
+
+ int __weak arch_set_shadow_stack_status(struct task_struct *t, unsigned long status)
+ {
+ return -EINVAL;
+ }
+
+ int __weak arch_lock_shadow_stack_status(struct task_struct *t, unsigned long status)
+ {
+ return -EINVAL;
+ }
+
#define PR_IO_FLUSHER (PF_MEMALLOC_NOIO | PF_LOCAL_THROTTLE)
#ifdef CONFIG_ANON_VMA_NAME
case PR_RISCV_SET_ICACHE_FLUSH_CTX:
error = RISCV_SET_ICACHE_FLUSH_CTX(arg2, arg3);
break;
+ case PR_GET_SHADOW_STACK_STATUS:
+ if (arg3 || arg4 || arg5)
+ return -EINVAL;
+ error = arch_get_shadow_stack_status(me, (unsigned long __user *) arg2);
+ break;
+ case PR_SET_SHADOW_STACK_STATUS:
+ if (arg3 || arg4 || arg5)
+ return -EINVAL;
+ error = arch_set_shadow_stack_status(me, arg2);
+ break;
+ case PR_LOCK_SHADOW_STACK_STATUS:
+ if (arg3 || arg4 || arg5)
+ return -EINVAL;
+ error = arch_lock_shadow_stack_status(me, arg2);
+ break;
default:
error = -EINVAL;
break;
depends on MMU
config GET_FREE_REGION
- depends on SPARSEMEM
bool
config DEVICE_PRIVATE
into virtual nodes when booted with "numa=fake=N", where N is the
number of nodes. This is only useful for debugging.
+ config ARCH_HAS_USER_SHADOW_STACK
+ bool
+ help
+ The architecture has hardware support for userspace shadow call
+ stacks (eg, x86 CET, arm64 GCS or RISC-V Zicfiss).
+
source "mm/damon/Kconfig"
endmenu
projects / J-linux.git / commitdiff