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| author | Janosch Frank <frankja@linux.ibm.com> | 2020-09-07 15:46:59 +0300 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2020-09-14 12:38:35 +0300 |
| commit | 1a80b54d1ce1556bba6a8d8cd9384d6a9dcb641a (patch) | |
| tree | fdbda1789a1e4338480d69a040182a83d8764b42 /arch/s390/mm | |
| parent | e670e64af1d46571be3d9b1177024d9c8520087c (diff) | |
| download | linux-1a80b54d1ce1556bba6a8d8cd9384d6a9dcb641a.tar.xz | |
s390/uv: add destroy page call
We don't need to export pages if we destroy the VM configuration
afterwards anyway. Instead we can destroy the page which will zero it
and then make it accessible to the host.
Destroying is about twice as fast as the export.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Link: https://lore.kernel.org/kvm/20200907124700.10374-2-frankja@linux.ibm.com/
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/mm')
| -rw-r--r-- | arch/s390/mm/gmap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c index 373542ca1113..cfb0017f33a7 100644 --- a/arch/s390/mm/gmap.c +++ b/arch/s390/mm/gmap.c @@ -2679,7 +2679,7 @@ static int __s390_reset_acc(pte_t *ptep, unsigned long addr, pte_t pte = READ_ONCE(*ptep); if (pte_present(pte)) - WARN_ON_ONCE(uv_convert_from_secure(pte_val(pte) & PAGE_MASK)); + WARN_ON_ONCE(uv_destroy_page(pte_val(pte) & PAGE_MASK)); return 0; } |