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target-ppc: Fix page table lookup with kvm enabled

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With kvm enabled, we store the hash page table information in the hypervisor.
Use ioctl to read the htab contents. Without this we get the below error when
trying to read the guest address

 (gdb) x/10 do_fork
 0xc000000000098660 <do_fork>:   Cannot access memory at address 0xc000000000098660
 (gdb)

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
[ fixes for 32 bit build (casts!), ldq_phys() API change,
  Greg Kurz <gkurz@linux.vnet.ibm.com ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Aneesh Kumar K.V 2014-02-20 18:52:24 +01:00 • committed by Alexander Graf
parent f3c75d42ad
commit 7c43bca004
6 changed files with 184 additions and 40 deletions
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1
hw/ppc/spapr.c
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@ -686,6 +686,7 @@ static void spapr_reset_htab(sPAPREnvironment *spapr)
if (shift > 0) {
/* Kernel handles htab, we don't need to allocate one */
spapr->htab_shift = shift;
kvmppc_kern_htab = true;
} else {
if (!spapr->htab) {
/* Allocate an htab if we don't yet have one */