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| author | Laurent Dufour <ldufour@linux.ibm.com> | 2020-04-16 18:27:15 +0200 |
|---|---|---|
| committer | Paul Mackerras <paulus@ozlabs.org> | 2020-05-27 11:39:31 +1000 |
| commit | 512721d2fcdb1bcfd87a0ffa7822c0ea37e3c65f (patch) | |
| tree | d8b6b29761a781e883186c394e84477753acfe02 /arch/powerpc/kvm | |
| parent | 32e594f9a63f6bc7fdd396d9bc0a77b18208332b (diff) | |
| download | linux-512721d2fcdb1bcfd87a0ffa7822c0ea37e3c65f.tar.bz2 | |
KVM: PPC: Book3S HV: Read ibm,secure-memory nodes
The newly introduced ibm,secure-memory nodes supersede the
ibm,uv-firmware's property secure-memory-ranges.
Firmware will no more expose the secure-memory-ranges property so first
read the new one and if not found rollback to the older one.
Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'arch/powerpc/kvm')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_uvmem.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_uvmem.c b/arch/powerpc/kvm/book3s_hv_uvmem.c index 76d05c71fb1f..e2cb3ce4931c 100644 --- a/arch/powerpc/kvm/book3s_hv_uvmem.c +++ b/arch/powerpc/kvm/book3s_hv_uvmem.c @@ -749,6 +749,20 @@ static u64 kvmppc_get_secmem_size(void) const __be32 *prop; u64 size = 0; + /* + * First try the new ibm,secure-memory nodes which supersede the + * secure-memory-ranges property. + * If we found some, no need to read the deprecated ones. + */ + for_each_compatible_node(np, NULL, "ibm,secure-memory") { + prop = of_get_property(np, "reg", &len); + if (!prop) + continue; + size += of_read_number(prop + 2, 2); + } + if (size) + return size; + np = of_find_compatible_node(NULL, NULL, "ibm,uv-firmware"); if (!np) goto out; |