c89388d301
Changes in 4.9.138 powerpc/eeh: Fix possible null deref in eeh_dump_dev_log() tty: check name length in tty_find_polling_driver() ARM: imx_v6_v7_defconfig: Select CONFIG_TMPFS_POSIX_ACL powerpc/nohash: fix undefined behaviour when testing page size support drm/omap: fix memory barrier bug in DMM driver media: pci: cx23885: handle adding to list failure MIPS: kexec: Mark CPU offline before disabling local IRQ powerpc/boot: Ensure _zimage_start is a weak symbol MIPS/PCI: Call pcie_bus_configure_settings() to set MPS/MRRS sc16is7xx: Fix for multi-channel stall media: tvp5150: fix width alignment during set_selection() powerpc/selftests: Wait all threads to join 9p locks: fix glock.client_id leak in do_lock 9p: clear dangling pointers in p9stat_free cdrom: fix improper type cast, which can leat to information leak. scsi: qla2xxx: Fix incorrect port speed being set for FC adapters scsi: qla2xxx: shutdown chip if reset fail fuse: Fix use-after-free in fuse_dev_do_read() fuse: Fix use-after-free in fuse_dev_do_write() fuse: fix blocked_waitq wakeup fuse: set FR_SENT while locked mm: do not bug_on on incorrect length in __mm_populate() e1000: avoid null pointer dereference on invalid stat type e1000: fix race condition between e1000_down() and e1000_watchdog bna: ethtool: Avoid reading past end of buffer parisc: Align os_hpmc_size on word boundary parisc: Fix HPMC handler by increasing size to multiple of 16 bytes parisc: Fix exported address of os_hpmc handler MIPS: Loongson-3: Fix CPU UART irq delivery problem MIPS: Loongson-3: Fix BRIDGE irq delivery problem xtensa: add NOTES section to the linker script xtensa: make sure bFLT stack is 16 byte aligned xtensa: fix boot parameters address translation clk: s2mps11: Fix matching when built as module and DT node contains compatible clk: at91: Fix division by zero in PLL recalc_rate() clk: rockchip: Fix static checker warning in rockchip_ddrclk_get_parent call libceph: bump CEPH_MSG_MAX_DATA_LEN Revert "ceph: fix dentry leak in splice_dentry()" mach64: fix display corruption on big endian machines mach64: fix image corruption due to reading accelerator registers reset: hisilicon: fix potential NULL pointer dereference vhost/scsi: truncate T10 PI iov_iter to prot_bytes ocfs2: fix a misuse a of brelse after failing ocfs2_check_dir_entry mm: thp: relax __GFP_THISNODE for MADV_HUGEPAGE mappings netfilter: conntrack: fix calculation of next bucket number in early_drop mtd: docg3: don't set conflicting BCH_CONST_PARAMS option of, numa: Validate some distance map rules termios, tty/tty_baudrate.c: fix buffer overrun arch/alpha, termios: implement BOTHER, IBSHIFT and termios2 Btrfs: fix cur_offset in the error case for nocow Btrfs: fix data corruption due to cloning of eof block clockevents/drivers/i8253: Add support for PIT shutdown quirk ext4: add missing brelse() update_backups()'s error path ext4: add missing brelse() in set_flexbg_block_bitmap()'s error path ext4: add missing brelse() add_new_gdb_meta_bg()'s error path ext4: avoid potential extra brelse in setup_new_flex_group_blocks() ext4: fix possible inode leak in the retry loop of ext4_resize_fs() ext4: avoid buffer leak in ext4_orphan_add() after prior errors ext4: fix missing cleanup if ext4_alloc_flex_bg_array() fails while resizing ext4: avoid possible double brelse() in add_new_gdb() on error path ext4: fix possible leak of sbi->s_group_desc_leak in error path ext4: fix possible leak of s_journal_flag_rwsem in error path ext4: release bs.bh before re-using in ext4_xattr_block_find() ext4: fix buffer leak in ext4_xattr_move_to_block() on error path ext4: fix buffer leak in __ext4_read_dirblock() on error path mount: Retest MNT_LOCKED in do_umount mount: Don't allow copying MNT_UNBINDABLE|MNT_LOCKED mounts mount: Prevent MNT_DETACH from disconnecting locked mounts sunrpc: correct the computation for page_ptr when truncating nfsd: COPY and CLONE operations require the saved filehandle to be set rtc: hctosys: Add missing range error reporting fuse: fix use-after-free in fuse_direct_IO() fuse: fix leaked notify reply configfs: replace strncpy with memcpy lib/ubsan.c: don't mark __ubsan_handle_builtin_unreachable as noreturn hugetlbfs: fix kernel BUG at fs/hugetlbfs/inode.c:444! mm: migration: fix migration of huge PMD shared pages drm/rockchip: Allow driver to be shutdown on reboot/kexec drm/dp_mst: Check if primary mstb is null drm/i915/hdmi: Add HDMI 2.0 audio clock recovery N values drm/i915/execlists: Force write serialisation into context image vs execution KVM: arm64: Fix caching of host MDCR_EL2 value Linux 4.9.138 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/*
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* machine_kexec.c for kexec
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* Created by <nschichan@corp.free.fr> on Thu Oct 12 15:15:06 2006
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*
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* This source code is licensed under the GNU General Public License,
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* Version 2. See the file COPYING for more details.
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*/
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#include <linux/compiler.h>
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#include <linux/kexec.h>
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#include <linux/mm.h>
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#include <linux/delay.h>
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#include <asm/cacheflush.h>
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#include <asm/page.h>
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extern const unsigned char relocate_new_kernel[];
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extern const size_t relocate_new_kernel_size;
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extern unsigned long kexec_start_address;
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extern unsigned long kexec_indirection_page;
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int (*_machine_kexec_prepare)(struct kimage *) = NULL;
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void (*_machine_kexec_shutdown)(void) = NULL;
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void (*_machine_crash_shutdown)(struct pt_regs *regs) = NULL;
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#ifdef CONFIG_SMP
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void (*relocated_kexec_smp_wait) (void *);
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atomic_t kexec_ready_to_reboot = ATOMIC_INIT(0);
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void (*_crash_smp_send_stop)(void) = NULL;
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#endif
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int
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machine_kexec_prepare(struct kimage *kimage)
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{
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if (_machine_kexec_prepare)
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return _machine_kexec_prepare(kimage);
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return 0;
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}
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void
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machine_kexec_cleanup(struct kimage *kimage)
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{
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}
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void
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machine_shutdown(void)
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{
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if (_machine_kexec_shutdown)
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_machine_kexec_shutdown();
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}
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void
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machine_crash_shutdown(struct pt_regs *regs)
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{
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if (_machine_crash_shutdown)
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_machine_crash_shutdown(regs);
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else
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default_machine_crash_shutdown(regs);
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}
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typedef void (*noretfun_t)(void) __noreturn;
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void
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machine_kexec(struct kimage *image)
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{
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unsigned long reboot_code_buffer;
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unsigned long entry;
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unsigned long *ptr;
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reboot_code_buffer =
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(unsigned long)page_address(image->control_code_page);
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kexec_start_address =
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(unsigned long) phys_to_virt(image->start);
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if (image->type == KEXEC_TYPE_DEFAULT) {
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kexec_indirection_page =
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(unsigned long) phys_to_virt(image->head & PAGE_MASK);
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} else {
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kexec_indirection_page = (unsigned long)&image->head;
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}
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memcpy((void*)reboot_code_buffer, relocate_new_kernel,
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relocate_new_kernel_size);
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/*
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* The generic kexec code builds a page list with physical
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* addresses. they are directly accessible through KSEG0 (or
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* CKSEG0 or XPHYS if on 64bit system), hence the
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* phys_to_virt() call.
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*/
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for (ptr = &image->head; (entry = *ptr) && !(entry &IND_DONE);
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ptr = (entry & IND_INDIRECTION) ?
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phys_to_virt(entry & PAGE_MASK) : ptr + 1) {
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if (*ptr & IND_SOURCE || *ptr & IND_INDIRECTION ||
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*ptr & IND_DESTINATION)
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*ptr = (unsigned long) phys_to_virt(*ptr);
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}
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/* Mark offline BEFORE disabling local irq. */
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set_cpu_online(smp_processor_id(), false);
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/*
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* we do not want to be bothered.
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*/
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local_irq_disable();
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printk("Will call new kernel at %08lx\n", image->start);
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printk("Bye ...\n");
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__flush_cache_all();
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#ifdef CONFIG_SMP
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/* All secondary cpus now may jump to kexec_wait cycle */
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relocated_kexec_smp_wait = reboot_code_buffer +
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(void *)(kexec_smp_wait - relocate_new_kernel);
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smp_wmb();
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atomic_set(&kexec_ready_to_reboot, 1);
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#endif
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((noretfun_t) reboot_code_buffer)();
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}
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