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path: root/target/ppc/kvm_ppc.h
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2017-02-22hw/ppc/spapr: Check for valid page size when hot plugging memoryThomas Huth
On POWER, the valid page sizes that the guest can use are bound to the CPU and not to the memory region. QEMU already has some fancy logic to find out the right maximum memory size to tell it to the guest during boot (see getrampagesize() in the file target/ppc/kvm.c for more information). However, once we're booted and the guest is using huge pages already, it is currently still possible to hot-plug memory regions that does not support huge pages - which of course does not work on POWER, since the guest thinks that it is possible to use huge pages everywhere. The KVM_RUN ioctl will then abort with -EFAULT, QEMU spills out a not very helpful error message together with a register dump and the user is annoyed that the VM unexpectedly died. To avoid this situation, we should check the page size of hot-plugged DIMMs to see whether it is possible to use it in the current VM. If it does not fit, we can print out a better error message and refuse to add it, so that the VM does not die unexpectely and the user has a second chance to plug a DIMM with a matching memory backend instead. Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1419466 Signed-off-by: Thomas Huth <thuth@redhat.com> [dwg: Fix a build error on 32-bit builds with KVM] Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2017-01-31ppc: Rename cpu_version to compat_pvrDavid Gibson
The 'cpu_version' field in PowerPCCPU is badly named. It's named after the 'cpu-version' device tree property where it is advertised, but that meaning may not be obvious in most places it appears. Worse, it doesn't even really correspond to that device tree property. The property contains either the processor's PVR, or, if the CPU is running in a compatibility mode, a special "logical PVR" representing which mode. Rename the cpu_version field, and a number of related variables to compat_pvr to make this clearer. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: Thomas Huth <thuth@redhat.com>
2017-01-19KVM: PPC: eliminate unnecessary duplicate constantsPaolo Bonzini
These are not needed since linux-headers/ provides up-to-date definitions. The constants are in linux-headers/asm-powerpc/kvm.h. The sole users, hw/intc/xics_kvm.c and target/ppc/kvm.c, include asm/kvm.h via sysemu/kvm.h->linux/kvm.h. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-12-20Move target-* CPU file into a target/ folderThomas Huth
We've currently got 18 architectures in QEMU, and thus 18 target-xxx folders in the root folder of the QEMU source tree. More architectures (e.g. RISC-V, AVR) are likely to be included soon, too, so the main folder of the QEMU sources slowly gets quite overcrowded with the target-xxx folders. To disburden the main folder a little bit, let's move the target-xxx folders into a dedicated target/ folder, so that target-xxx/ simply becomes target/xxx/ instead. Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part] Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part] Acked-by: Michael Walle <michael@walle.cc> [lm32 part] Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part] Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part] Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part] Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part] Acked-by: Richard Henderson <rth@twiddle.net> [alpha part] Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part] Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part] Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [cris&microblaze part] Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part] Signed-off-by: Thomas Huth <thuth@redhat.com>