[openadk] [PATCH] target: linux: config: Set COMPAT_32BIT_TIME on 32bit architectures

5 Jan 2025

Without it, on these architectures 'lvm pvscan' will busy-loop printing:
| io_getevents failed: No such file or directory
The symbol is defined in kernel's arch/Kconfig with 'default !64BIT ||
COMPAT'. Introduce Config.in.compat which has the symbol default to y
unless a known 64bit ADK_TARGET_ARCH is enabled. Drop the symbol from
all target/*/kernel/* for which the default applies.
On 64bit systems, enabling this symbol is probably useful to provide
comaptibility towards 32bit user space. Not sure if this is a possible
choice in OpenADK, but just in case the symbol was not removed from:
- target/aarch64/kernel/raspberry-pi4-64
- target/mips64/kernel/qemu-mips64
- target/riscv64/kernel/qemu-riscv64
Another case is targets explicitly having the symbol disabled, namely
kvx. Given that the two kernel configs in question are full copies of
the kernel-generated one, they are likely not a deliberate choice and
thus removed as well.
Signed-off-by: Phil Sutter phil@nwl.cc
---
 target/arc/kernel/qemu-arc                          |  1 -
 target/arc/kernel/synopsys-hsdk                     |  1 -
 target/arm/kernel/banana-p2-zero                    |  1 -
 target/arm/kernel/qemu-arm-realview-eb-mpcore       |  1 -
 target/arm/kernel/qemu-arm-spitz                    |  1 -
 target/arm/kernel/qemu-arm-terrier                  |  1 -
 target/arm/kernel/qemu-arm-versatilepb              |  1 -
 target/arm/kernel/qemu-arm-vexpress-a9              |  1 -
 target/arm/kernel/raspberry-pi4                     |  1 -
 target/arm/kernel/solidrun-imx6                     |  1 -
 target/arm/kernel/st-stm32f746g                     |  1 -
 target/csky/kernel/qemu-csky                        |  1 -
 target/hppa/kernel/qemu-hppa                        |  1 -
 target/kvx/kernel/generic-kvx                       |  1 -
 target/kvx/kernel/qemu-kvx                          |  1 -
 target/linux/Config.in                              |  1 +
 target/linux/config/Config.in.compat                | 13 +++++++++++++
 target/m68k/kernel/aranym-m68k                      |  1 -
 target/m68k/kernel/qemu-m68k-mcf5208                |  1 -
 target/m68k/kernel/qemu-m68k-q800                   |  1 -
 target/m68k/kernel/qemu-m68k-virt                   |  1 -
 target/microblaze/kernel/qemu-microblaze-ml605      |  1 -
 target/microblaze/kernel/qemu-microblaze-s3adsp1800 |  1 -
 target/mips/kernel/qemu-mips                        |  1 -
 target/nios2/kernel/qemu-nios2                      |  1 -
 target/or1k/kernel/qemu-or1k                        |  1 -
 target/ppc/kernel/qemu-ppc-bamboo                   |  1 -
 target/ppc/kernel/qemu-ppc-macppc                   |  1 -
 target/ppc/kernel/qemu-ppc-mpc8544ds                |  1 -
 target/riscv32/kernel/qemu-riscv32                  |  1 -
 target/sh/kernel/numato-mimasv2                     |  1 -
 target/sparc/kernel/qemu-sparc                      |  1 -
 target/x86/kernel/qemu-x86                          |  1 -
 33 files changed, 14 insertions(+), 31 deletions(-)
 create mode 100644 target/linux/config/Config.in.compat

diff --git a/target/arc/kernel/qemu-arc b/target/arc/kernel/qemu-arc
index d537406d43081..813c00d2ea6f3 100644
--- a/target/arc/kernel/qemu-arc
+++ b/target/arc/kernel/qemu-arc
@@ -1,3 +1,2 @@
 CONFIG_ARC=y
 CONFIG_ARC_HAS_ACCL_REGS=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/arc/kernel/synopsys-hsdk b/target/arc/kernel/synopsys-hsdk
index 8deed79efb396..55ae3ccb6d7af 100644
--- a/target/arc/kernel/synopsys-hsdk
+++ b/target/arc/kernel/synopsys-hsdk
@@ -9,4 +9,3 @@ CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS=y
 CONFIG_ARC_HAS_LL64=y
 CONFIG_ARC_HAS_DIV_REM=y
 CONFIG_ARC_HAS_ACCL_REGS=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/arm/kernel/banana-p2-zero b/target/arm/kernel/banana-p2-zero
index 586bc605a4afc..acd35737e7520 100644
--- a/target/arm/kernel/banana-p2-zero
+++ b/target/arm/kernel/banana-p2-zero
@@ -37,7 +37,6 @@ CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT=y
 CONFIG_CLONE_BACKWARDS=y
 CONFIG_OLD_SIGSUSPEND3=y
 CONFIG_OLD_SIGACTION=y
-CONFIG_COMPAT_32BIT_TIME=y
 CONFIG_HAVE_ARCH_VMAP_STACK=y
 CONFIG_VMAP_STACK=y
 CONFIG_ARCH_OPTIONAL_KERNEL_RWX=y
diff --git a/target/arm/kernel/qemu-arm-realview-eb-mpcore b/target/arm/kernel/qemu-arm-realview-eb-mpcore
index acd059cc810cd..9f967f4f2a813 100644
--- a/target/arm/kernel/qemu-arm-realview-eb-mpcore
+++ b/target/arm/kernel/qemu-arm-realview-eb-mpcore
@@ -16,4 +16,3 @@ CONFIG_KUSER_HELPERS=y
 CONFIG_ATAGS=y
 CONFIG_CMDLINE="console=ttyAMA0 mem=128M"
 CONFIG_CMDLINE_FROM_BOOTLOADER=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/arm/kernel/qemu-arm-spitz b/target/arm/kernel/qemu-arm-spitz
index 259028d952673..09a1d76ff6e7d 100644
--- a/target/arm/kernel/qemu-arm-spitz
+++ b/target/arm/kernel/qemu-arm-spitz
@@ -44,4 +44,3 @@ CONFIG_SERIAL_PXA_NON8250=y
 CONFIG_SERIAL_PXA_CONSOLE=y
 CONFIG_SERIAL_CORE=y
 CONFIG_SERIAL_CORE_CONSOLE=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/arm/kernel/qemu-arm-terrier b/target/arm/kernel/qemu-arm-terrier
index 4a947ea14da84..e8a01e232be8b 100644
--- a/target/arm/kernel/qemu-arm-terrier
+++ b/target/arm/kernel/qemu-arm-terrier
@@ -44,4 +44,3 @@ CONFIG_SERIAL_PXA_NON8250=y
 CONFIG_SERIAL_PXA_CONSOLE=y
 CONFIG_SERIAL_CORE=y
 CONFIG_SERIAL_CORE_CONSOLE=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/arm/kernel/qemu-arm-versatilepb b/target/arm/kernel/qemu-arm-versatilepb
index 148fda569cc4c..8c08abdc7e3ed 100644
--- a/target/arm/kernel/qemu-arm-versatilepb
+++ b/target/arm/kernel/qemu-arm-versatilepb
@@ -15,4 +15,3 @@ CONFIG_PLAT_VERSATILE_SCHED_CLOCK=y
 CONFIG_PLAT_VERSATILE=y
 CONFIG_VECTORS_BASE=0x00000000
 CONFIG_PHYS_OFFSET=0x00000000
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/arm/kernel/qemu-arm-vexpress-a9 b/target/arm/kernel/qemu-arm-vexpress-a9
index b3953ad10836c..170965e9b0675 100644
--- a/target/arm/kernel/qemu-arm-vexpress-a9
+++ b/target/arm/kernel/qemu-arm-vexpress-a9
@@ -13,7 +13,6 @@ CONFIG_ARM_THUMB=y
 CONFIG_ARM_VIRT_EXT=y
 CONFIG_SWP_EMULATE=y
 CONFIG_KUSER_HELPERS=y
-CONFIG_COMPAT_32BIT_TIME=y
 CONFIG_ARM_AMBA=y
 CONFIG_MFD_CORE=y
 CONFIG_MFD_SYSCON=y
diff --git a/target/arm/kernel/raspberry-pi4 b/target/arm/kernel/raspberry-pi4
index 77c23a9971898..04b7aadffae61 100644
--- a/target/arm/kernel/raspberry-pi4
+++ b/target/arm/kernel/raspberry-pi4
@@ -25,7 +25,6 @@ CONFIG_RASPBERRYPI_FIRMWARE=y
 CONFIG_CLK_BCM2711_DVP=y
 CONFIG_CLK_BCM2835=y
 CONFIG_CLK_RASPBERRYPI=y
-CONFIG_COMPAT_32BIT_TIME=y
 CONFIG_SERIAL_DEV_BUS=y
 CONFIG_GPIO_CDEV=y
 CONFIG_GPIO_CDEV_V1=y
diff --git a/target/arm/kernel/solidrun-imx6 b/target/arm/kernel/solidrun-imx6
index 801f1d1b7581c..3289ef4e7899f 100644
--- a/target/arm/kernel/solidrun-imx6
+++ b/target/arm/kernel/solidrun-imx6
@@ -21,7 +21,6 @@ CONFIG_ZBOOT_ROM_TEXT=0x0
 CONFIG_ZBOOT_ROM_BSS=0x0
 CONFIG_ATAGS_PROC=y
 CONFIG_AUTO_ZRELADDR=y
-CONFIG_COMPAT_32BIT_TIME=y
CONFIG_MXC_TZIC=y
 CONFIG_MXC_AVIC=y
diff --git a/target/arm/kernel/st-stm32f746g b/target/arm/kernel/st-stm32f746g
index 7c8375059b1cf..a156d2bff5419 100644
--- a/target/arm/kernel/st-stm32f746g
+++ b/target/arm/kernel/st-stm32f746g
@@ -25,4 +25,3 @@ CONFIG_DMADEVICES=y
 CONFIG_STM32_DMA=y
 CONFIG_STM32_DMAMUX=y
 CONFIG_STM32_MDMA=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/csky/kernel/qemu-csky b/target/csky/kernel/qemu-csky
index 876d5a87f25f8..1d06909b6702f 100644
--- a/target/csky/kernel/qemu-csky
+++ b/target/csky/kernel/qemu-csky
@@ -5,4 +5,3 @@ CONFIG_NATIONALCHIP_IRQ=y
 CONFIG_NATIONALCHIP_TIMER=y
 CONFIG_CSKYMAC=y
 CONFIG_SECTION_MISMATCH_WARN_ONLY=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/hppa/kernel/qemu-hppa b/target/hppa/kernel/qemu-hppa
index e0d0e95a3281a..e16c3f4665455 100644
--- a/target/hppa/kernel/qemu-hppa
+++ b/target/hppa/kernel/qemu-hppa
@@ -6,4 +6,3 @@ CONFIG_GSC_WAX=y
 CONFIG_GSC_DINO=y
 CONFIG_SERIAL_MUX=y
 CONFIG_SERIAL_MUX_CONSOLE=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/kvx/kernel/generic-kvx b/target/kvx/kernel/generic-kvx
index 1d953b12ebdda..484a43d3aa798 100644
--- a/target/kvx/kernel/generic-kvx
+++ b/target/kvx/kernel/generic-kvx
@@ -247,7 +247,6 @@ CONFIG_STACKPROTECTOR_STRONG=y
 CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
 CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
 CONFIG_MODULES_USE_ELF_RELA=y
-# CONFIG_COMPAT_32BIT_TIME is not set
 CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT=y
 CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
 CONFIG_STRICT_KERNEL_RWX=y
diff --git a/target/kvx/kernel/qemu-kvx b/target/kvx/kernel/qemu-kvx
index 1d953b12ebdda..484a43d3aa798 100644
--- a/target/kvx/kernel/qemu-kvx
+++ b/target/kvx/kernel/qemu-kvx
@@ -247,7 +247,6 @@ CONFIG_STACKPROTECTOR_STRONG=y
 CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
 CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
 CONFIG_MODULES_USE_ELF_RELA=y
-# CONFIG_COMPAT_32BIT_TIME is not set
 CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT=y
 CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
 CONFIG_STRICT_KERNEL_RWX=y
diff --git a/target/linux/Config.in b/target/linux/Config.in
index 42e4efcbbe165..fb9d1810eea11 100644
--- a/target/linux/Config.in
+++ b/target/linux/Config.in
@@ -28,3 +28,4 @@ source target/linux/config/Config.in.pm
 source target/linux/config/Config.in.kvm
 source target/linux/config/Config.in.virtio
 source target/linux/config/Config.in.debug
+source target/linux/config/Config.in.compat
diff --git a/target/linux/config/Config.in.compat b/target/linux/config/Config.in.compat
new file mode 100644
index 0000000000000..f255088ab043e
--- /dev/null
+++ b/target/linux/config/Config.in.compat
@@ -0,0 +1,13 @@
+config ADK_LINUX_KERNEL_COMPAT_32BIT_TIME
+	bool
+	default n if ADK_TARGET_ARCH_AARCH64
+	default n if ADK_TARGET_ARCH_ALPHA
+	default n if ADK_TARGET_ARCH_IA64
+	default n if ADK_TARGET_ARCH_LOONGARCH
+	default n if ADK_TARGET_ARCH_MIPS64
+	default n if ADK_TARGET_ARCH_PPC64
+	default n if ADK_TARGET_ARCH_RISCV64
+	default n if ADK_TARGET_ARCH_S390
+	default n if ADK_TARGET_ARCH_SPARC64
+	default n if ADK_TARGET_ARCH_X86_64
+	default y
diff --git a/target/m68k/kernel/aranym-m68k b/target/m68k/kernel/aranym-m68k
index 9a4db207af2ca..fb084e4b98941 100644
--- a/target/m68k/kernel/aranym-m68k
+++ b/target/m68k/kernel/aranym-m68k
@@ -6,4 +6,3 @@ CONFIG_FPU=y
 CONFIG_ATARI=y
 CONFIG_NATFEAT=y
 CONFIG_NFETH=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/m68k/kernel/qemu-m68k-mcf5208 b/target/m68k/kernel/qemu-m68k-mcf5208
index 9cfa4b601eac6..42497f9faa3bb 100644
--- a/target/m68k/kernel/qemu-m68k-mcf5208
+++ b/target/m68k/kernel/qemu-m68k-mcf5208
@@ -16,4 +16,3 @@ CONFIG_RAMKERNEL=y
 CONFIG_BOOTPARAM=y
 CONFIG_BOOTPARAM_STRING="console=ttyS0,115200"
 CONFIG_CRC32=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/m68k/kernel/qemu-m68k-q800 b/target/m68k/kernel/qemu-m68k-q800
index 69cac7e515e58..05324c42bdb64 100644
--- a/target/m68k/kernel/qemu-m68k-q800
+++ b/target/m68k/kernel/qemu-m68k-q800
@@ -7,4 +7,3 @@ CONFIG_ADB=y
 CONFIG_ADB_MACII=y
 CONFIG_BOOTPARAM=y
 CONFIG_BOOTPARAM_STRING=""
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/m68k/kernel/qemu-m68k-virt b/target/m68k/kernel/qemu-m68k-virt
index 47e9200d467a2..db5f51c8e0598 100644
--- a/target/m68k/kernel/qemu-m68k-virt
+++ b/target/m68k/kernel/qemu-m68k-virt
@@ -1,3 +1,2 @@
 CONFIG_M68K=y
 CONFIG_VIRT=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/microblaze/kernel/qemu-microblaze-ml605 b/target/microblaze/kernel/qemu-microblaze-ml605
index 9749c22fa570a..932843c131018 100644
--- a/target/microblaze/kernel/qemu-microblaze-ml605
+++ b/target/microblaze/kernel/qemu-microblaze-ml605
@@ -13,4 +13,3 @@ CONFIG_XILINX_MICROBLAZE0_HW_VER="8.10.a"
 CONFIG_PCI_XILINX=y
 CONFIG_CMDLINE_BOOL=y
 CONFIG_CMDLINE_FORCE=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/microblaze/kernel/qemu-microblaze-s3adsp1800 b/target/microblaze/kernel/qemu-microblaze-s3adsp1800
index 91a7dc577c0c0..cf8c3a91c8665 100644
--- a/target/microblaze/kernel/qemu-microblaze-s3adsp1800
+++ b/target/microblaze/kernel/qemu-microblaze-s3adsp1800
@@ -13,4 +13,3 @@ CONFIG_XILINX_MICROBLAZE0_HW_VER="7.10.d"
 CONFIG_PCI_XILINX=y
 CONFIG_CMDLINE_FORCE=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/mips/kernel/qemu-mips b/target/mips/kernel/qemu-mips
index 85ad371b61dae..94a0a01754ee3 100644
--- a/target/mips/kernel/qemu-mips
+++ b/target/mips/kernel/qemu-mips
@@ -3,4 +3,3 @@ CONFIG_MIPS_MALTA=y
 CONFIG_MIPS_BONITO64=y
 CONFIG_MIPS_MSC=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/nios2/kernel/qemu-nios2 b/target/nios2/kernel/qemu-nios2
index 19e0ac7534a4d..8b354e8a8372b 100644
--- a/target/nios2/kernel/qemu-nios2
+++ b/target/nios2/kernel/qemu-nios2
@@ -10,5 +10,4 @@ CONFIG_NIOS2_DTB_SOURCE_BOOL=y
 CONFIG_NIOS2_DTB_SOURCE="10m50_devboard.dts"
 CONFIG_CMDLINE_BOOL=y
 CONFIG_NIOS2_PASS_CMDLINE=y
-CONFIG_COMPAT_32BIT_TIME=y
 CONFIG_NIOS2_ALIGNMENT_TRAP=y
diff --git a/target/or1k/kernel/qemu-or1k b/target/or1k/kernel/qemu-or1k
index e96067748453c..ee4d9d55cdedd 100644
--- a/target/or1k/kernel/qemu-or1k
+++ b/target/or1k/kernel/qemu-or1k
@@ -6,4 +6,3 @@ CONFIG_OPENRISC_HAVE_INST_FL1=y
 CONFIG_OPENRISC_HAVE_INST_MUL=y
 CONFIG_OPENRISC_HAVE_INST_DIV=y
 CONFIG_OPENRISC_NO_SPR_SR_DSX=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/ppc/kernel/qemu-ppc-bamboo b/target/ppc/kernel/qemu-ppc-bamboo
index 424addb14de15..b12292b7bfd5f 100644
--- a/target/ppc/kernel/qemu-ppc-bamboo
+++ b/target/ppc/kernel/qemu-ppc-bamboo
@@ -3,4 +3,3 @@ CONFIG_PPC32=y
 CONFIG_44x=y
 CONFIG_BAMBOO=y
 CONFIG_PRINTK=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/ppc/kernel/qemu-ppc-macppc b/target/ppc/kernel/qemu-ppc-macppc
index b873a30968b5c..b68a484c03886 100644
--- a/target/ppc/kernel/qemu-ppc-macppc
+++ b/target/ppc/kernel/qemu-ppc-macppc
@@ -23,4 +23,3 @@ CONFIG_ADB_CUDA=y
 CONFIG_INPUT_ADBHID=y
 CONFIG_CMDLINE_BOOL=y
 CONFIG_PRINTK=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/ppc/kernel/qemu-ppc-mpc8544ds b/target/ppc/kernel/qemu-ppc-mpc8544ds
index 515cf400ce9ba..1e51d4b07f286 100644
--- a/target/ppc/kernel/qemu-ppc-mpc8544ds
+++ b/target/ppc/kernel/qemu-ppc-mpc8544ds
@@ -9,4 +9,3 @@ CONFIG_PHYS_64BIT=y
 CONFIG_SPE=y
 CONFIG_PPC_UDBG_16550=y
 CONFIG_DEFAULT_UIMAGE=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/riscv32/kernel/qemu-riscv32 b/target/riscv32/kernel/qemu-riscv32
index 0aab147656c63..e49c3ab0d8459 100644
--- a/target/riscv32/kernel/qemu-riscv32
+++ b/target/riscv32/kernel/qemu-riscv32
@@ -1,7 +1,6 @@
 CONFIG_RISCV=y
 CONFIG_32BIT=y
 CONFIG_FPU=y
-CONFIG_COMPAT_32BIT_TIME=y
 CONFIG_ARCH_RV32I=y
 CONFIG_SOC_VIRT=y
 CONFIG_NONPORTABLE=y
diff --git a/target/sh/kernel/numato-mimasv2 b/target/sh/kernel/numato-mimasv2
index faa0ff5588239..ca290f15dc124 100644
--- a/target/sh/kernel/numato-mimasv2
+++ b/target/sh/kernel/numato-mimasv2
@@ -15,4 +15,3 @@ CONFIG_MMC_SPI=y
 CONFIG_CLKSRC_JCORE_PIT=y
 CONFIG_JCORE_AIC=y
 CONFIG_SERIAL_EARLYCON=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/sparc/kernel/qemu-sparc b/target/sparc/kernel/qemu-sparc
index 1ee79ef31befa..ffa9bb9f8668e 100644
--- a/target/sparc/kernel/qemu-sparc
+++ b/target/sparc/kernel/qemu-sparc
@@ -7,4 +7,3 @@ CONFIG_SERIAL_CONSOLE=y
 CONFIG_SERIAL_SUNCORE=y
 CONFIG_SERIAL_SUNZILOG=y
 CONFIG_SERIAL_SUNZILOG_CONSOLE=y
-CONFIG_COMPAT_32BIT_TIME=y
diff --git a/target/x86/kernel/qemu-x86 b/target/x86/kernel/qemu-x86
index 41a00164c6b95..1049b23d83495 100644
--- a/target/x86/kernel/qemu-x86
+++ b/target/x86/kernel/qemu-x86
@@ -1,4 +1,3 @@
 CONFIG_X86=y
 CONFIG_X86_32=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_COMPAT_32BIT_TIME=y
-- 
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[openadk] [PATCH] target: linux: config: Set COMPAT_32BIT_TIME on 32bit architectures