diff options
| author | Cédric Le Goater <clg@kaod.org> | 2019-05-20 09:15:12 +0200 |
|---|---|---|
| committer | Paul Mackerras <paulus@ozlabs.org> | 2019-05-29 13:44:37 +1000 |
| commit | d47aacdb8e0bc03dcaa1a5630a3c633cdcd4cfa7 (patch) | |
| tree | 61c7e7804d649495d3e5baffe0473f76026ec172 /arch | |
| parent | 5a3f49364c3ffa1107bd88f8292406e98c5d206c (diff) | |
KVM: PPC: Book3S HV: XIVE: Clear file mapping when device is released
Improve the release of the XIVE KVM device by clearing the file
address_space, which is used to unmap the interrupt ESB pages when a
device is passed-through.
Suggested-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kvm/book3s_xive_native.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_xive_native.c b/arch/powerpc/kvm/book3s_xive_native.c index da31dd05fd72..9cedd04e7a44 100644 --- a/arch/powerpc/kvm/book3s_xive_native.c +++ b/arch/powerpc/kvm/book3s_xive_native.c @@ -977,6 +977,14 @@ static void kvmppc_xive_native_release(struct kvm_device *dev) pr_devel("Releasing xive native device\n"); /* + * Clear the KVM device file address_space which is used to + * unmap the ESB pages when a device is passed-through. + */ + mutex_lock(&xive->mapping_lock); + xive->mapping = NULL; + mutex_unlock(&xive->mapping_lock); + + /* * Since this is the device release function, we know that * userspace does not have any open fd or mmap referring to * the device. Therefore there can not be any of the |