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| author | Kevin O'Connor <kevin@koconnor.net> | 2015-03-11 17:45:47 -0400 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2015-03-13 10:02:17 +0100 |
| commit | 4adadbde6904807de2e990c0af839ad0cc977806 (patch) | |
| tree | a81de956cd7fd8960e4b7523f41c93444717f0e9 /vgasrc/vbe.c | |
| parent | f16479727d131feff2d023bf005cf656c32dce2e (diff) | |
| download | seabios-4adadbde6904807de2e990c0af839ad0cc977806.zip seabios-4adadbde6904807de2e990c0af839ad0cc977806.tar.gz seabios-4adadbde6904807de2e990c0af839ad0cc977806.tar.bz2 | |
smp: Fix smp race introduced in 0673b787rel-1.8.1
In 0673b787 the QEMU SMP init code was changed to run in 32bit mode.
Unfortunately, the transition32 assembler function is not
multi-processor safe, because it modifies the global RTC index
register. This race condition led to sporadic failures when emulating
machines with a large number of processors.
This patch changes the entry_smp code to use a variant of transition32
that does not touch the RTC registers.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
(cherry picked from commit 5ae3dd6f74e17a7cd06165a75214798b0c606115)
Diffstat (limited to 'vgasrc/vbe.c')
0 files changed, 0 insertions, 0 deletions