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| author | Alexander Graf <agraf@suse.de> | 2011-06-08 02:45:37 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-07-12 13:16:17 +0300 |
| commit | 1dda606c5f94b14a8f36c220d1d8844bab68a720 (patch) | |
| tree | cf78b5aa3d499d239079c392491bcf656fbe05e6 /kernel/compat.c | |
| parent | 91e3d71db29d9b3b67b64e2a08e724a7ff538b4c (diff) | |
| download | lwn-1dda606c5f94b14a8f36c220d1d8844bab68a720.tar.gz lwn-1dda606c5f94b14a8f36c220d1d8844bab68a720.zip | |
KVM: Add compat ioctl for KVM_SET_SIGNAL_MASK
KVM has an ioctl to define which signal mask should be used while running
inside VCPU_RUN. At least for big endian systems, this mask is different
on 32-bit and 64-bit systems (though the size is identical).
Add a compat wrapper that converts the mask to whatever the kernel accepts,
allowing 32-bit kvm user space to set signal masks.
This patch fixes qemu with --enable-io-thread on ppc64 hosts when running
32-bit user land.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'kernel/compat.c')
| -rw-r--r-- | kernel/compat.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/compat.c b/kernel/compat.c index fc9eb093acd5..18197ae2d465 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -890,6 +890,7 @@ sigset_from_compat (sigset_t *set, compat_sigset_t *compat) case 1: set->sig[0] = compat->sig[0] | (((long)compat->sig[1]) << 32 ); } } +EXPORT_SYMBOL_GPL(sigset_from_compat); asmlinkage long compat_sys_rt_sigtimedwait (compat_sigset_t __user *uthese, |