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authorLinus Torvalds <torvalds@linux-foundation.org>2023-08-30 00:53:51 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-08-30 00:53:51 +0300
commitd68b4b6f307d155475cce541f2aee938032ed22e (patch)
treec2a6487ac8b1bce963b5b352b42e461a6fa8da15 /arch/riscv
parentb96a3e9142fdf346b05b20e867b4f0dfca119e96 (diff)
parentdce8f8ed1de1d9d6d27c5ccd202ce4ec163b100c (diff)
downloadlinux-d68b4b6f307d155475cce541f2aee938032ed22e.tar.xz
Merge tag 'mm-nonmm-stable-2023-08-28-22-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton: - An extensive rework of kexec and crash Kconfig from Eric DeVolder ("refactor Kconfig to consolidate KEXEC and CRASH options") - kernel.h slimming work from Andy Shevchenko ("kernel.h: Split out a couple of macros to args.h") - gdb feature work from Kuan-Ying Lee ("Add GDB memory helper commands") - vsprintf inclusion rationalization from Andy Shevchenko ("lib/vsprintf: Rework header inclusions") - Switch the handling of kdump from a udev scheme to in-kernel handling, by Eric DeVolder ("crash: Kernel handling of CPU and memory hot un/plug") - Many singleton patches to various parts of the tree * tag 'mm-nonmm-stable-2023-08-28-22-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (81 commits) document while_each_thread(), change first_tid() to use for_each_thread() drivers/char/mem.c: shrink character device's devlist[] array x86/crash: optimize CPU changes crash: change crash_prepare_elf64_headers() to for_each_possible_cpu() crash: hotplug support for kexec_load() x86/crash: add x86 crash hotplug support crash: memory and CPU hotplug sysfs attributes kexec: exclude elfcorehdr from the segment digest crash: add generic infrastructure for crash hotplug support crash: move a few code bits to setup support of crash hotplug kstrtox: consistently use _tolower() kill do_each_thread() nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse scripts/bloat-o-meter: count weak symbol sizes treewide: drop CONFIG_EMBEDDED lockdep: fix static memory detection even more lib/vsprintf: declare no_hash_pointers in sprintf.h lib/vsprintf: split out sprintf() and friends kernel/fork: stop playing lockless games for exe_file replacement adfs: delete unused "union adfs_dirtail" definition ...
Diffstat (limited to 'arch/riscv')
-rw-r--r--arch/riscv/Kbuild2
-rw-r--r--arch/riscv/Kconfig46
-rw-r--r--arch/riscv/configs/nommu_k210_defconfig2
-rw-r--r--arch/riscv/configs/nommu_k210_sdcard_defconfig2
-rw-r--r--arch/riscv/kernel/elf_kexec.c4
5 files changed, 19 insertions, 37 deletions
diff --git a/arch/riscv/Kbuild b/arch/riscv/Kbuild
index afa83e307a2e..d25ad1c19f88 100644
--- a/arch/riscv/Kbuild
+++ b/arch/riscv/Kbuild
@@ -5,7 +5,7 @@ obj-$(CONFIG_BUILTIN_DTB) += boot/dts/
obj-y += errata/
obj-$(CONFIG_KVM) += kvm/
-obj-$(CONFIG_ARCH_HAS_KEXEC_PURGATORY) += purgatory/
+obj-$(CONFIG_ARCH_SUPPORTS_KEXEC_PURGATORY) += purgatory/
# for cleaning
subdir- += boot
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index b08d0e1a93b9..f9fbfbf11ad2 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -656,48 +656,30 @@ config RISCV_BOOT_SPINWAIT
If unsure what to do here, say N.
-config KEXEC
- bool "Kexec system call"
- depends on MMU
+config ARCH_SUPPORTS_KEXEC
+ def_bool MMU
+
+config ARCH_SELECTS_KEXEC
+ def_bool y
+ depends on KEXEC
select HOTPLUG_CPU if SMP
- select KEXEC_CORE
- help
- kexec is a system call that implements the ability to shutdown your
- current kernel, and to start another kernel. It is like a reboot
- but it is independent of the system firmware. And like a reboot
- you can start any kernel with it, not just Linux.
- The name comes from the similarity to the exec system call.
+config ARCH_SUPPORTS_KEXEC_FILE
+ def_bool 64BIT && MMU
-config KEXEC_FILE
- bool "kexec file based systmem call"
- depends on 64BIT && MMU
+config ARCH_SELECTS_KEXEC_FILE
+ def_bool y
+ depends on KEXEC_FILE
select HAVE_IMA_KEXEC if IMA
- select KEXEC_CORE
select KEXEC_ELF
- help
- This is new version of kexec system call. This system call is
- file based and takes file descriptors as system call argument
- for kernel and initramfs as opposed to list of segments as
- accepted by previous system call.
-
- If you don't know what to do here, say Y.
-config ARCH_HAS_KEXEC_PURGATORY
+config ARCH_SUPPORTS_KEXEC_PURGATORY
def_bool KEXEC_FILE
depends on CRYPTO=y
depends on CRYPTO_SHA256=y
-config CRASH_DUMP
- bool "Build kdump crash kernel"
- help
- Generate crash dump after being started by kexec. This should
- be normally only set in special crash dump kernels which are
- loaded in the main kernel with kexec-tools into a specially
- reserved region and then later executed after a crash by
- kdump/kexec.
-
- For more details see Documentation/admin-guide/kdump/kdump.rst
+config ARCH_SUPPORTS_CRASH_DUMP
+ def_bool y
config COMPAT
bool "Kernel support for 32-bit U-mode"
diff --git a/arch/riscv/configs/nommu_k210_defconfig b/arch/riscv/configs/nommu_k210_defconfig
index e36fffd6fb18..146c46d0525b 100644
--- a/arch/riscv/configs/nommu_k210_defconfig
+++ b/arch/riscv/configs/nommu_k210_defconfig
@@ -21,7 +21,7 @@ CONFIG_CC_OPTIMIZE_FOR_SIZE=y
# CONFIG_IO_URING is not set
# CONFIG_ADVISE_SYSCALLS is not set
# CONFIG_KALLSYMS is not set
-CONFIG_EMBEDDED=y
+CONFIG_EXPERT=y
# CONFIG_VM_EVENT_COUNTERS is not set
# CONFIG_COMPAT_BRK is not set
CONFIG_SLUB=y
diff --git a/arch/riscv/configs/nommu_k210_sdcard_defconfig b/arch/riscv/configs/nommu_k210_sdcard_defconfig
index c1ad85f0a4f7..95d8d1808f19 100644
--- a/arch/riscv/configs/nommu_k210_sdcard_defconfig
+++ b/arch/riscv/configs/nommu_k210_sdcard_defconfig
@@ -13,7 +13,7 @@ CONFIG_CC_OPTIMIZE_FOR_SIZE=y
# CONFIG_IO_URING is not set
# CONFIG_ADVISE_SYSCALLS is not set
# CONFIG_KALLSYMS is not set
-CONFIG_EMBEDDED=y
+CONFIG_EXPERT=y
# CONFIG_VM_EVENT_COUNTERS is not set
# CONFIG_COMPAT_BRK is not set
CONFIG_SLUB=y
diff --git a/arch/riscv/kernel/elf_kexec.c b/arch/riscv/kernel/elf_kexec.c
index c08bb5c3b385..f4099059ed8f 100644
--- a/arch/riscv/kernel/elf_kexec.c
+++ b/arch/riscv/kernel/elf_kexec.c
@@ -260,7 +260,7 @@ static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
cmdline = modified_cmdline;
}
-#ifdef CONFIG_ARCH_HAS_KEXEC_PURGATORY
+#ifdef CONFIG_ARCH_SUPPORTS_KEXEC_PURGATORY
/* Add purgatory to the image */
kbuf.top_down = true;
kbuf.mem = KEXEC_BUF_MEM_UNKNOWN;
@@ -274,7 +274,7 @@ static void *elf_kexec_load(struct kimage *image, char *kernel_buf,
sizeof(kernel_start), 0);
if (ret)
pr_err("Error update purgatory ret=%d\n", ret);
-#endif /* CONFIG_ARCH_HAS_KEXEC_PURGATORY */
+#endif /* CONFIG_ARCH_SUPPORTS_KEXEC_PURGATORY */
/* Add the initrd to the image */
if (initrd != NULL) {