KVM: PPC: Book3S HV: Get rid of vcore nap_count and n_woken

Browse source

We can tell when a secondary thread has finished running a guest by
the fact that it clears its kvm_hstate.kvm_vcpu pointer, so there
is no real need for the nap_count field in the kvmppc_vcore struct.
This changes kvmppc_wait_for_nap to poll the kvm_hstate.kvm_vcpu
pointers of the secondary threads rather than polling vc->nap_count.
Besides reducing the size of the kvmppc_vcore struct by 8 bytes,
this also means that we can tell which secondary threads have got
stuck and thus print a more informative error message.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>

...

This commit is contained in:

Paul Mackerras 2015-03-28 14:21:06 +11:00 • committed by Alexander Graf

parent 25fedfca94

commit 5d5b99cd68

4 changed files with 34 additions and 35 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

arch/powerpc/include/asm/kvm_host.h

View file

1

arch/powerpc/kernel/asm-offsets.c

View file

47

arch/powerpc/kvm/book3s_hv.c

View file

19

arch/powerpc/kvm/book3s_hv_rmhandlers.S

View file