On real hardware the ppc hash page table is stored in memory; accordingly
our mmu emulation code can read a hash page table in guest memory. But,
when paravirtualized under PAPR, the real hash page table is in host
memory, accessible to the guest only via hypercalls. We model this by
also allowing the MMU emulation code to access a specially allocated hash
page table outside the guest's memory image. At present these two options
are implemented with some ugly conditionals at each access point in the mmu
emulation code. In the implementation of the PAPR hypercalls, we assume
the external hash table.
This patch cleans things up by adding helpers to load and store from the
hash table for both 32-bit and 64-bit hash mmus. The 64-bit versions
handle both the in-guest-memory and outside guest memory cases. The 32-bit
versions only handle the in-guest-memory case since no 32-bit systems can
have an external hash table at present.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Currently cpu.h contains a number of definitions relating to the 64-bit
hash MMU. Some are used in the MMU emulation code, but some are only used
in the spapr MMU management hcall implementations.
This patch moves these definitions (except for a few that are needed
more widely) into mmu-hash64.h header, shared between the MMU emulation
code and the spapr hcall code. The MMU emulation code is also updated to
actually use a number of those definitions in place of hard coded
constants.
Similarly, we add new analogous definitions to mmu-hash32.h and use those
in place of many hard-coded constants in mmu-hash32.c
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[agraf: fix 32-bit hosts]
Signed-off-by: Alexander Graf <agraf@suse.de>
Both fields are used in VMState, thus need to be moved together.
Explicitly zero them on reset since they were located before
breakpoints.
Pass PowerPCCPU to kvmppc_handle_halt().
Signed-off-by: Andreas Färber <afaerber@suse.de>
* origin/master: (75 commits)
tcg: Don't make exitreq flag a local temporary
Makefile: Add subdir dependency on config-devices-all.mak
make_device_config.sh: Emit dependency file to directory where included
Revert "make_device_config.sh: Fix target path in generated dependency file"
s390/virtio-ccw: remove redundant call to blockdev_mark_auto_del
s390/css: Fix subchannel detection
Allow virtio-net features for legacy s390 virtio bus
s390: virtio-ccw maintainer
s390: simplify kvm cpu init
pseries: Add compatible property to root of device tree
target-ppc: Move CPU aliases out of translate_init.c
target-ppc: Report CPU aliases for QMP
target-ppc: List alias names alongside CPU models
target-ppc: Make host CPU a subclass of the host's CPU model
PPC: xnu kernel expects FLUSH to be cleared on STOP
PPC: Fix dma interrupt
target-ppc: Fix PPC_DUMP_SPR_ACCESS build
target-ppc: Synchronize FPU state with KVM
target-ppc: Add mechanism for synchronizing SPRs with KVM
Save memory allocation in the elf loader
...
