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KVM: s390: consider system MHA for guest storage

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Verify that the guest maximum storage address is below the MHA (maximum
host address) value allowed on the host.

Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Guenther Hutzl <hutzl@linux.vnet.ibm.com>
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
[adopt to match recent limit,size changes]

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Guenther Hutzl
2014-12-01 17:24:42 +01:00
committed by Christian Borntraeger
parent a3a92c31bf
commit 32e6b236d2
2 changed files with 12 additions and 2 deletions
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8
drivers/s390/char/sclp_early.c
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@@ -40,7 +40,8 @@ struct read_info_sccb {
u8 fac85; /* 85 */
u8 _pad_86[91 - 86]; /* 86-90 */
u8 flags; /* 91 */
u8 _pad_92[100 - 92]; /* 92-99 */
u8 _pad_92[99 - 92]; /* 92-98 */
u8 hamaxpow; /* 99 */
u32 rnsize2; /* 100-103 */
u64 rnmax2; /* 104-111 */
u8 _pad_112[116 - 112]; /* 112-115 */
@@ -120,6 +121,11 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
sclp.rzm <<= 20;
sclp.ibc = sccb->ibc;
if (sccb->hamaxpow && sccb->hamaxpow < 64)
sclp.hamax = (1UL << sccb->hamaxpow) - 1;
else
sclp.hamax = U64_MAX;
if (!sccb->hcpua) {
if (MACHINE_IS_VM)
sclp.max_cores = 64;