qemu/include
Alexey Kardashevskiy 2a6593cb6a spapr: Add ibm, client-architecture-support call
The PAPR+ specification defines a ibm,client-architecture-support (CAS)
RTAS call which purpose is to provide a negotiation mechanism for
the guest and the hypervisor to work out the best compatibility parameters.
During the negotiation process, the guest provides an array of various
options and capabilities which it supports, the hypervisor adjusts
the device tree and (optionally) reboots the guest.

At the moment the Linux guest calls CAS method at early boot so SLOF
gets called. SLOF allocates a memory buffer for the device tree changes
and calls a custom KVMPPC_H_CAS hypercall. QEMU parses the options,
composes a diff for the device tree, copies it to the buffer provided
by SLOF and returns to SLOF. SLOF updates the device tree and returns
control to the guest kernel. Only then the Linux guest parses the device
tree so it is possible to avoid unnecessary reboot in most cases.

The device tree diff is a header with an update format version
(defined as 1 in this patch) followed by a device tree with the properties
which require update.

If QEMU detects that it has to reboot the guest, it silently does so
as the guest expects reboot to happen because this is usual pHyp firmware
behavior.

This defines custom KVMPPC_H_CAS hypercall. The current SLOF already
has support for it.

This implements stub which returns very basic tree (root node,
no properties) to the guest.

As the return buffer does not contain any change, no change in behavior is
expected.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alexander Graf <agraf@suse.de>
2014-06-16 13:24:37 +02:00
..
block block: Move declaration of bdrv_get_aio_context to block.h 2014-06-04 09:56:12 +02:00
disas disas: Implement disassembly output for A64 2014-02-08 14:50:48 +00:00
exec exec: replace ffsl with ctzl 2014-06-11 00:25:06 +01:00
fpu softfloat: Introduce float32_to_uint64_round_to_zero 2014-04-08 11:20:00 +02:00
hw spapr: Add ibm, client-architecture-support call 2014-06-16 13:24:37 +02:00
libdecnumber libdecnumber: Introduce decNumberIntegralToInt64 2014-06-16 13:24:29 +02:00
migration migration: expose xbzrle cache miss rate 2014-05-05 22:15:03 +02:00
monitor monitor: add Error-propagating monitor_handle_fd_param2() 2014-05-08 14:19:58 -04:00
net net: Export valid host network devices list 2014-06-11 10:10:29 -04:00
qapi purge error_is_set() 2014-05-22 18:14:01 +01:00
qemu util: Add InvMixColumns 2014-06-16 13:24:33 +02:00
qom softmmu: make do_unaligned_access a method of CPU 2014-06-05 16:10:31 +02:00
sysemu dump: Make DumpState and endian conversion routines available for arch-specific dump code 2014-06-16 13:24:36 +02:00
ui spice: add mouse cursor support 2014-06-13 12:34:57 +02:00
config.h janitor: move remaining public headers to include/ 2012-12-19 08:32:46 +01:00
elf.h linux-user/elfload.c: Support ARM HWCAP2 flags 2014-05-02 21:59:36 +03:00
glib-compat.h glib-compat.h: add new thread API emulation on top of pre-2.31 API 2014-06-10 07:44:01 +02:00
qemu-common.h util: add qemu_iovec_is_zero 2014-05-19 12:20:19 +02:00
qemu-io.h qemu-io: Fix warnings from static code analysis 2014-03-13 14:42:24 +01:00
trace.h build: some simplifications for "trace/Makefile.objs" 2013-01-12 18:42:51 +01:00