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author | Alexander Graf <agraf@suse.de> | 2010-08-15 06:04:24 (GMT) |
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committer | Avi Kivity <avi@redhat.com> | 2010-10-24 08:52:15 (GMT) |
commit | 8b6db3bc965c204db6868d4005808b4fdc9c46d7 (patch) | |
tree | 973d040d221d5fd3448c97b1c102d014fe6e6687 /arch/powerpc/kvm/book3s.c | |
parent | ad0873763a83e7b31ba87a85ec2027dd6a9d7b55 (diff) | |
download | linux-fsl-qoriq-8b6db3bc965c204db6868d4005808b4fdc9c46d7.tar.xz |
KVM: PPC: Implement correct SID mapping on Book3s_32
Up until now we were doing segment mappings wrong on Book3s_32. For Book3s_64
we were using a trick where we know that a single mmu_context gives us 16 bits
of context ids.
The mm system on Book3s_32 instead uses a clever algorithm to distribute VSIDs
across the available range, so a context id really only gives us 16 available
VSIDs.
To keep at least a few guest processes in the SID shadow, let's map a number of
contexts that we can use as VSID pool. This makes the code be actually correct
and shouldn't hurt performance too much.
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kvm/book3s.c')
0 files changed, 0 insertions, 0 deletions