KVM guest: fix bogus wallclock physical address calculation

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The use of __pa() to calculate the address of a C-visible symbol
is wrong, and can lead to unpredictable results. See arch/x86/include/asm/page.h
for details.

It should be replaced with __pa_symbol(), that does the correct math here,
by taking relocations into account.  This ensures the correct wallclock data
structure physical address is passed to the hypervisor.

Cc: stable@kernel.org
Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

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Glauber Costa 2009-08-31 03:04:31 -04:00 • committed by Avi Kivity

parent 5fff7d270b

commit a20316d2aa

1 changed files with 2 additions and 2 deletions

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arch/x86/kernel/kvmclock.c

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