Hello,
Commit:
5500d265a2a8fa63d60c08beb549de8ec82ff7a5
x86/smp: use APIC ALLBUT destination shorthand when possible
Introduced a bogus usage of the scratch cpumask: it was used in a
function that could be called from interrupt context, and hence using
the scratch cpumask there is not safe. Patch #4 is a fix for that usage,
together with also preventing the usage of any per-CPU variables when
send_IPI_mask is called from #MC or NMI context. Previous patches are
preparatory changes.
Thanks, Roger.
Roger Pau Monne (4):
x86: introduce a nmi_count tracking variable
x86: track when in NMI context
x86: track when in #MC context
x86/smp: do not use scratch_cpumask when in interrupt or exception
context
xen/arch/x86/cpu/mcheck/mce.c | 2 ++
xen/arch/x86/nmi.c | 11 +++++------
xen/arch/x86/smp.c | 12 ++++++++++++
xen/arch/x86/traps.c | 10 +++++++++-
xen/include/asm-x86/hardirq.h | 13 ++++++++++++-
xen/include/asm-x86/nmi.h | 2 ++
xen/include/xen/irq_cpustat.h | 1 -
7 files changed, 42 insertions(+), 9 deletions(-)
--
2.25.0
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