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| author | kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk> | 2006-04-14 12:01:15 +0100 |
|---|---|---|
| committer | kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk> | 2006-04-14 12:01:15 +0100 |
| commit | 52b9331de2fa446d659d61313f319990012d4742 (patch) | |
| tree | 48a90d9a19477aed02b710060135f1fbdb7d643f /tools/libxc/xc_core.c | |
| parent | a56425fa9d6063b7b1ecaacc3966562d88c10781 (diff) | |
| download | xen-52b9331de2fa446d659d61313f319990012d4742.tar.gz xen-52b9331de2fa446d659d61313f319990012d4742.tar.bz2 xen-52b9331de2fa446d659d61313f319990012d4742.zip | |
Fix Xen's interrupt acknowledgement routines on certain
(apparently broken) IO-APIC hardware:
1. Do not mask/unmask the IO-APIC pin during normal ISR
processing. This seems to have really bizarre side effects
on some chipsets.
2. Since we instead tickle the local APIC in the ->end
irq hook function, it *must* run on the CPU that
received the interrupt. Therefore we track which CPUs
need to do final acknowledgement and IPI them if
necessary to do so.
Signed-off-by: Keir Fraser <keir@xensource.com>
Diffstat (limited to 'tools/libxc/xc_core.c')
0 files changed, 0 insertions, 0 deletions