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| author | Igor Mammedov | 2020-09-23 11:46:40 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin | 2020-09-29 08:15:24 +0200 |
| commit | 00dc02d284eab0890936ec47c0b7baba5e3b4e37 (patch) | |
| tree | 7b58e18a411cc3cbc3d5058268cb26c374821c80 /hw/i386 | |
| parent | virtio: update MemoryRegionCaches when guest set bad features (diff) | |
| download | qemu-00dc02d284eab0890936ec47c0b7baba5e3b4e37.tar.gz qemu-00dc02d284eab0890936ec47c0b7baba5e3b4e37.tar.xz qemu-00dc02d284eab0890936ec47c0b7baba5e3b4e37.zip | |
x86: lpc9: let firmware negotiate 'CPU hotplug with SMI' features
It will allow firmware to notify QEMU that firmware requires SMI
being triggered on CPU hot[un]plug, so that it would be able to account
for hotplugged CPU and relocate it to new SMM base and/or safely remove
CPU on unplug.
Using negotiated features, follow up patches will insert SMI upcall
into AML code, to make sure that firmware processes hotplug before
guest OS would attempt to use new CPU.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200923094650.1301166-2-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/i386')
| -rw-r--r-- | hw/i386/pc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 50e8317342..2c6194e57f 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -97,7 +97,9 @@ #include "trace.h" #include CONFIG_DEVICES -GlobalProperty pc_compat_5_1[] = {}; +GlobalProperty pc_compat_5_1[] = { + { "ICH9-LPC", "x-smi-cpu-hotplug", "off" }, +}; const size_t pc_compat_5_1_len = G_N_ELEMENTS(pc_compat_5_1); GlobalProperty pc_compat_5_0[] = { |