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Ankur Arora ae03900105 xen/vcpu: Handle xen_vcpu_setup() failure at boot 
On PVH, PVHVM, at failure in the VCPUOP_register_vcpu_info hypercall
we limit the number of cpus to to MAX_VIRT_CPUS. However, if this
failure had occurred for a cpu beyond MAX_VIRT_CPUS, we continue
to function with > MAX_VIRT_CPUS.

This leads to problems at the next save/restore cycle when there
are > MAX_VIRT_CPUS threads going into stop_machine() but coming
back up there's valid state for only the first MAX_VIRT_CPUS.

This patch pulls the excess CPUs down via cpu_down().

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
 		2017-06-13 16:10:58 +02:00
..
alpha osf_wait4(): fix infoleak 2017-05-21 13:10:07 -04:00
arc Kbuild UAPI header export updates for v4.12 2017-05-10 20:45:36 -07:00
arm xen: avoid type warning in xchg_xen_ulong 2017-06-08 15:07:38 -07:00
arm64 ACPI-related fixes for arm64: 2017-06-02 12:06:27 -07:00
blackfin uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
c6x uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
cris devicetree: Move include prefixes from arch to separate directory 2017-05-18 23:55:48 -07:00
frv frv: declare jiffies to be located in the .data section 2017-06-02 15:07:37 -07:00
h8300 uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
hexagon uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
ia64 Kbuild UAPI header export updates for v4.12 2017-05-10 20:45:36 -07:00
m32r uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
m68k uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
metag devicetree: Move include prefixes from arch to separate directory 2017-05-18 23:55:48 -07:00
microblaze uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
mips kthread: fix boot hang (regression) on MIPS/OpenRISC 2017-05-29 09:40:54 -07:00
mn10300 uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
nios2 nios2 update for v4.12-rc1 2017-05-12 09:53:16 -07:00
openrisc kthread: fix boot hang (regression) on MIPS/OpenRISC 2017-05-29 09:40:54 -07:00
parisc uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
powerpc powerpc fixes for 4.12 #4 2017-05-27 09:28:34 -07:00
s390 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-05-16 09:24:44 -07:00
score uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
sh Kbuild UAPI header export updates for v4.12 2017-05-10 20:45:36 -07:00
sparc sparc/ftrace: Fix ftrace graph time measurement 2017-05-17 12:07:47 -07:00
tile arch/include: remove empty Kbuild files 2017-05-11 00:22:18 +09:00
um Merge branch 'for-linus-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml 2017-05-13 10:20:02 -07:00
unicore32 Kbuild UAPI header export updates for v4.12 2017-05-10 20:45:36 -07:00
x86 xen/vcpu: Handle xen_vcpu_setup() failure at boot 2017-06-13 16:10:58 +02:00
xtensa uapi: export all headers under uapi directories 2017-05-11 00:21:54 +09:00
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Kconfig Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-05-10 10:30:46 -07:00