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hw/arm/virt: Add high MMIO PCI region, 512G in size

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This large region is necessary for some devices like ivshmem and video cards
32-bit kernels can be built without LPAE support. In this case such a kernel
will not be able to use PCI controller which has windows in high addresses.
In order to work around the problem, "highmem" option is introduced. It
defaults to on on, but can be manually set to off in order to be able to run
those old 32-bit guests.

Signed-off-by: Pavel Fedin <p.fedin@samsung.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Shannon Zhao <shannon.zhao@linaro.org>
[PMM: Added missing ULL suffixes and a comment to the a15memmap[] entry]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Pavel Fedin 2015-09-07 10:39:29 +01:00 • committed by Peter Maydell
parent 3a9148d0bd
commit 5125f9cd25
4 changed files with 76 additions and 9 deletions
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1
include/hw/arm/virt-acpi-build.h
View file

@ -31,6 +31,7 @@ typedef struct VirtGuestInfo {
FWCfgState *fw_cfg;
const MemMapEntry *memmap;
const int *irqmap;
bool use_highmem;
} VirtGuestInfo;

1
include/hw/arm/virt.h
View file

@ -56,6 +56,7 @@ enum {
VIRT_PCIE_ECAM,
VIRT_GIC_V2M,
VIRT_PLATFORM_BUS,
VIRT_PCIE_MMIO_HIGH,
};
typedef struct MemMapEntry {