x86/xen: Allow to retry if cpu_initialize_context() failed.

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If memory allocation in cpu_initialize_context() fails then it will
bring up the VCPU and leave with the corresponding CPU bit set in
xen_cpu_initialized_map.

The following (presumably successful) CPU bring up will BUG in
xen_pv_cpu_up() because nothing for that VCPU would be initialized.

Clear the CPU bits, that were set in cpu_initialize_context() in case
the memory allocation fails.

[ bigeasy: Creating a patch from Boris' email. ]

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20220209080214.1439408-2-bigeasy@linutronix.de

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Boris Ostrovsky 2022-02-09 09:02:13 +01:00 • committed by Thomas Gleixner

parent ce522ba9ef

commit e8a69f12f0

1 changed files with 4 additions and 1 deletions

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arch/x86/xen/smp_pv.c

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