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[PATCH v2 06/11] microvm/pcie: add 64bit mmio window
From: |
Gerd Hoffmann |
Subject: |
[PATCH v2 06/11] microvm/pcie: add 64bit mmio window |
Date: |
Thu, 24 Sep 2020 08:27:29 +0200 |
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>
---
hw/i386/microvm.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
index 273abe28c9c1..a27929e13623 100644
--- a/hw/i386/microvm.c
+++ b/hw/i386/microvm.c
@@ -198,6 +198,10 @@ 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;
+ 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 +387,9 @@ 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);
}
--
2.27.0
- [PATCH v2 00/11] microvm: add pcie support, Gerd Hoffmann, 2020/09/24
- [PATCH v2 01/11] move MemMapEntry, Gerd Hoffmann, 2020/09/24
- [PATCH v2 04/11] microvm: add irq table, Gerd Hoffmann, 2020/09/24
- [PATCH v2 05/11] microvm: add pcie support, Gerd Hoffmann, 2020/09/24
- [PATCH v2 02/11] acpi: add acpi_dsdt_add_gpex, Gerd Hoffmann, 2020/09/24
- [PATCH v2 06/11] microvm/pcie: add 64bit mmio window,
Gerd Hoffmann <=
- [PATCH v2 03/11] arm: use acpi_dsdt_add_gpex, Gerd Hoffmann, 2020/09/24
- [PATCH v2 07/11] tests/acpi: allow updates for expected data files, Gerd Hoffmann, 2020/09/24
- [PATCH v2 11/11] tests/acpi: update expected data files, Gerd Hoffmann, 2020/09/24
- [PATCH v2 08/11] tests/acpi: factor out common microvm test setup, Gerd Hoffmann, 2020/09/24
- [PATCH v2 10/11] acpi/gpex: no reason to use a method for _CRS, Gerd Hoffmann, 2020/09/24
- [PATCH v2 09/11] tests/acpi: add microvm pcie test, Gerd Hoffmann, 2020/09/24
- Re: [PATCH v2 00/11] microvm: add pcie support, Michael S. Tsirkin, 2020/09/24