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| author | Paolo Bonzini <pbonzini@redhat.com> | 2021-01-07 18:06:52 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-01-07 18:06:52 -0500 |
| commit | bc351f07260533cc1b3987339551decd00ddd52e (patch) | |
| tree | 3b6f396681f08dacc8dd24ce2c586ea2195e825d /arch/s390/kernel/uv.c | |
| parent | d45f89f7437d0f2c8275b4434096164db106384d (diff) | |
| parent | 9aa418792f5f11ef5d6f72265e1f8ae07efd5784 (diff) | |
Merge branch 'kvm-master' into kvm-next
Fixes to get_mmio_spte, destined to 5.10 stable branch.
Diffstat (limited to 'arch/s390/kernel/uv.c')
| -rw-r--r-- | arch/s390/kernel/uv.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c index 14bd9d58edc9..883bfed9f5c2 100644 --- a/arch/s390/kernel/uv.c +++ b/arch/s390/kernel/uv.c @@ -129,8 +129,15 @@ int uv_destroy_page(unsigned long paddr) .paddr = paddr }; - if (uv_call(0, (u64)&uvcb)) + if (uv_call(0, (u64)&uvcb)) { + /* + * Older firmware uses 107/d as an indication of a non secure + * page. Let us emulate the newer variant (no-op). + */ + if (uvcb.header.rc == 0x107 && uvcb.header.rrc == 0xd) + return 0; return -EINVAL; + } return 0; } |