kernel/linux.git/include/uapi/misc/pvpanic.h, branch v6.19.11Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v6.19.112024-04-11T13:12:10+00:00misc/pvpanic: add shutdown event definition2024-04-11T13:12:10+00:00Thomas Weißschuhlinux@weissschuh.net2024-03-13T18:19:31+00:00urn:sha1:ad76f3e8f57cef368fa98f2d4d8902ad66481a3e
Shutdown requests are normally hardware dependent.
By extending pvpanic to also handle shutdown requests, guests can
submit such requests with an easily implementable and cross-platform
mechanism.
The event was added to the specification in qemu commit
73279cecca03 ("docs/specs/pvpanic: document shutdown event").
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20240313-pvpanic-shutdown-header-v1-2-7f1970d66366@weissschuh.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
misc/pvpanic: use bit macros2024-04-11T13:12:10+00:00Thomas Weißschuhlinux@weissschuh.net2024-03-13T18:19:30+00:00urn:sha1:043327875298030095f9c5d04bd41def28275175
The macros are easier to read.
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/lkml/2023110407-unselect-uptight-b96d@gregkh/
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20240313-pvpanic-shutdown-header-v1-1-7f1970d66366@weissschuh.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
misc: pvpanic: add crash loaded event2020-01-14T14:07:37+00:00zhenwei pipizhenwei@bytedance.com2020-01-02T02:35:13+00:00urn:sha1:191941692a3d1b6a9614502b279be062926b70f5
Some users prefer kdump tools to generate guest kernel dumpfile,
at the same time, need a out-of-band kernel panic event.
Currently if booting guest kernel with 'crash_kexec_post_notifiers',
QEMU will receive PVPANIC_PANICKED event and stop VM. If booting
guest kernel without 'crash_kexec_post_notifiers', guest will not
call notifier chain.
Add PVPANIC_CRASH_LOADED bit for pvpanic event, it means that guest
kernel actually hit a kernel panic, but the guest kernel wants to
handle by itself.
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Link: https://lore.kernel.org/r/20200102023513.318836-3-pizhenwei@bytedance.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
misc: pvpanic: move bit definition to uapi header file2020-01-14T14:07:37+00:00zhenwei pipizhenwei@bytedance.com2020-01-02T02:35:12+00:00urn:sha1:e0b9a42735f2672ca2764cfbea6e55a81098d5ba
Some processes outside of the kernel(Ex, QEMU) should know what the
value really is for, so move the bit definition to a uapi file.
Suggested-by: Greg KH <gregkh@linuxfoundation.org>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Link: https://lore.kernel.org/r/20200102023513.318836-2-pizhenwei@bytedance.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>