Searched hist:ba0ced82eab1bd9664aa7304a7daeb6f1d20ab78 (Results 1 – 3 of 3) sorted by relevance
| /freebsd/sys/sys/ |
| H A D | kdb.h | diff ba0ced82eab1bd9664aa7304a7daeb6f1d20ab78 Sun Apr 26 02:41:29 CEST 2020 Eric van Gyzen <vangyzen@FreeBSD.org> Fix handling of NMIs from unknown sources (BMC, hypervisor)
Release kernels have no KDB backends enabled, so they discard an NMI
if it is not due to a hardware failure. This includes NMIs from
IPMI BMCs and hypervisors.
Furthermore, the interaction of panic_on_nmi, kdb_on_nmi, and
debugger_on_panic is confusing.
Respond to all NMIs according to panic_on_nmi and debugger_on_panic.
Remove kdb_on_nmi. Expand the meaning of panic_on_nmi by making
it a bitfield. There are currently two bits: one for NMIs due to
hardware failure, and one for all others. Leave room for more.
If panic_on_nmi and debugger_on_panic are both true, don't actually panic,
but directly enter the debugger, to allow someone to leave the debugger
and [hopefully] resume normal execution.
Reviewed by: kib
MFC after: 2 weeks
Relnotes: yes: machdep.kdb_on_nmi is gone; machdep.panic_on_nmi changed
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D24558
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| /freebsd/sys/x86/x86/ |
| H A D | cpu_machdep.c | diff ba0ced82eab1bd9664aa7304a7daeb6f1d20ab78 Sun Apr 26 02:41:29 CEST 2020 Eric van Gyzen <vangyzen@FreeBSD.org> Fix handling of NMIs from unknown sources (BMC, hypervisor)
Release kernels have no KDB backends enabled, so they discard an NMI
if it is not due to a hardware failure. This includes NMIs from
IPMI BMCs and hypervisors.
Furthermore, the interaction of panic_on_nmi, kdb_on_nmi, and
debugger_on_panic is confusing.
Respond to all NMIs according to panic_on_nmi and debugger_on_panic.
Remove kdb_on_nmi. Expand the meaning of panic_on_nmi by making
it a bitfield. There are currently two bits: one for NMIs due to
hardware failure, and one for all others. Leave room for more.
If panic_on_nmi and debugger_on_panic are both true, don't actually panic,
but directly enter the debugger, to allow someone to leave the debugger
and [hopefully] resume normal execution.
Reviewed by: kib
MFC after: 2 weeks
Relnotes: yes: machdep.kdb_on_nmi is gone; machdep.panic_on_nmi changed
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D24558
|
| /freebsd/sys/kern/ |
| H A D | kern_shutdown.c | diff ba0ced82eab1bd9664aa7304a7daeb6f1d20ab78 Sun Apr 26 02:41:29 CEST 2020 Eric van Gyzen <vangyzen@FreeBSD.org> Fix handling of NMIs from unknown sources (BMC, hypervisor)
Release kernels have no KDB backends enabled, so they discard an NMI
if it is not due to a hardware failure. This includes NMIs from
IPMI BMCs and hypervisors.
Furthermore, the interaction of panic_on_nmi, kdb_on_nmi, and
debugger_on_panic is confusing.
Respond to all NMIs according to panic_on_nmi and debugger_on_panic.
Remove kdb_on_nmi. Expand the meaning of panic_on_nmi by making
it a bitfield. There are currently two bits: one for NMIs due to
hardware failure, and one for all others. Leave room for more.
If panic_on_nmi and debugger_on_panic are both true, don't actually panic,
but directly enter the debugger, to allow someone to leave the debugger
and [hopefully] resume normal execution.
Reviewed by: kib
MFC after: 2 weeks
Relnotes: yes: machdep.kdb_on_nmi is gone; machdep.panic_on_nmi changed
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D24558
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