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pc: add 'etc/reserved-memory-end' fw_cfg interface for SeaBIOS

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'etc/reserved-memory-end' will allow QEMU to tell BIOS where PCI
BARs mapping could safely start in high memory.

Allowing BIOS to start mapping 64-bit PCI BARs at address where it
wouldn't conflict with other mappings QEMU might place before it.

That permits QEMU to reserve extra address space before
64-bit PCI hole for memory hotplug.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2014-06-02 15:25:10 +02:00 • committed by Michael S. Tsirkin
parent a0cc8856e8
commit de268e134c
4 changed files with 15 additions and 1 deletions
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1
include/hw/i386/pc.h
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@ -77,6 +77,7 @@ struct PcGuestInfo {
uint64_t *node_cpu;
FWCfgState *fw_cfg;
bool has_acpi_build;
bool has_reserved_memory;
};
/* parallel.c */