diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2020-09-28 12:42:50 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2020-09-30 11:29:56 +0200 |
| commit | 8c2d9f9a38aa3237e16722e36e5a6b53a43fc7db (patch) | |
| tree | c299a296165c55f4abc71c61d9c352d4ab31b84f /hw | |
| parent | 24db877ab6e6dc999016f1f29e59c7eb1539f5d3 (diff) | |
| download | qemu-8c2d9f9a38aa3237e16722e36e5a6b53a43fc7db.zip qemu-8c2d9f9a38aa3237e16722e36e5a6b53a43fc7db.tar.gz qemu-8c2d9f9a38aa3237e16722e36e5a6b53a43fc7db.tar.bz2 | |
microvm/pcie: add 64bit mmio window
Place the 64bit window at the top of the physical address space, assign
25% of the avaiable address space. Force cpu.host-phys-bits=on for
microvm machine typs so this actually works reliable.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200928104256.9241-7-kraxel@redhat.com
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/i386/microvm.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c index 273abe2..17e3f2f 100644 --- a/hw/i386/microvm.c +++ b/hw/i386/microvm.c @@ -198,6 +198,12 @@ static void microvm_devices_init(MicrovmMachineState *mms) } if (x86_machine_is_acpi_enabled(x86ms) && mms->pcie == ON_OFF_AUTO_ON) { + /* use topmost 25% of the address space available */ + hwaddr phys_size = (hwaddr)1 << X86_CPU(first_cpu)->phys_bits; + if (phys_size > 0x1000000ll) { + mms->gpex.mmio64.size = phys_size / 4; + mms->gpex.mmio64.base = phys_size - mms->gpex.mmio64.size; + } mms->gpex.mmio32.base = PCIE_MMIO_BASE; mms->gpex.mmio32.size = PCIE_MMIO_SIZE; mms->gpex.ecam.base = PCIE_ECAM_BASE; @@ -383,6 +389,9 @@ static void microvm_fix_kernel_cmdline(MachineState *machine) static void microvm_device_pre_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { + X86CPU *cpu = X86_CPU(dev); + + cpu->host_phys_bits = true; /* need reliable phys-bits */ x86_cpu_pre_plug(hotplug_dev, dev, errp); } |