x86: kvmclock: allocate pvclock shared memory area

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We want to expose the pvclock shared memory areas, which
the hypervisor periodically updates, to userspace.

For a linear mapping from userspace, it is necessary that
entire page sized regions are used for array of pvclock
structures.

There is no such guarantee with per cpu areas, therefore move
to memblock_alloc based allocation.

Acked-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

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Marcelo Tosatti 2012-11-27 23:28:48 -02:00

parent 78c0337a38

commit 7069ed6763

1 changed files with 47 additions and 11 deletions

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arch/x86/kernel/kvmclock.c

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