[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[RFC PATCH v3 07/38] xen-platform: allow its creation with XEN_EMULATE m
From: |
David Woodhouse |
Subject: |
[RFC PATCH v3 07/38] xen-platform: allow its creation with XEN_EMULATE mode |
Date: |
Fri, 16 Dec 2022 00:40:46 +0000 |
From: Joao Martins <joao.m.martins@oracle.com>
The only thing we need to handle on KVM side is to change the
pfn from R/W to R/O.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
---
hw/i386/xen/xen_platform.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/hw/i386/xen/xen_platform.c b/hw/i386/xen/xen_platform.c
index a6f0fb478a..15d5ae7c69 100644
--- a/hw/i386/xen/xen_platform.c
+++ b/hw/i386/xen/xen_platform.c
@@ -283,7 +283,10 @@ static void platform_fixed_ioport_writeb(void *opaque,
uint32_t addr, uint32_t v
case 0: /* Platform flags */ {
hvmmem_type_t mem_type = (val & PFFLAG_ROM_LOCK) ?
HVMMEM_ram_ro : HVMMEM_ram_rw;
- if (xen_set_mem_type(xen_domid, mem_type, 0xc0, 0x40)) {
+ if (xen_mode == XEN_EMULATE) {
+ /* XXX */
+ s->flags = val & PFFLAG_ROM_LOCK;
+ } else if (xen_set_mem_type(xen_domid, mem_type, 0xc0, 0x40)) {
DPRINTF("unable to change ro/rw state of ROM memory area!\n");
} else {
s->flags = val & PFFLAG_ROM_LOCK;
@@ -508,12 +511,6 @@ static void xen_platform_realize(PCIDevice *dev, Error
**errp)
PCIXenPlatformState *d = XEN_PLATFORM(dev);
uint8_t *pci_conf;
- /* Device will crash on reset if xen is not initialized */
- if (!xen_enabled()) {
- error_setg(errp, "xen-platform device requires the Xen accelerator");
- return;
- }
-
pci_conf = dev->config;
pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
--
2.35.3
- [RFC PATCH v3 27/38] hw/xen: Implement EVTCHNOP_unmask, (continued)
- [RFC PATCH v3 27/38] hw/xen: Implement EVTCHNOP_unmask, David Woodhouse, 2022/12/15
- [RFC PATCH v3 37/38] hw/xen: Support HVM_PARAM_CALLBACK_TYPE_GSI callback, David Woodhouse, 2022/12/15
- [RFC PATCH v3 20/38] i386/xen: handle VCPUOP_register_runstate_memory_area, David Woodhouse, 2022/12/15
- [RFC PATCH v3 13/38] i386/xen: manage and save/restore Xen guest long_mode setting, David Woodhouse, 2022/12/15
- [RFC PATCH v3 05/38] i386/kvm: handle Xen HVM cpuid leaves, David Woodhouse, 2022/12/15
- [RFC PATCH v3 01/38] include: import xen public headers, David Woodhouse, 2022/12/15
- [RFC PATCH v3 18/38] i386/xen: handle VCPUOP_register_vcpu_info, David Woodhouse, 2022/12/15
- [RFC PATCH v3 10/38] i386/xen: implement HYPERCALL_xen_version, David Woodhouse, 2022/12/15
- [RFC PATCH v3 07/38] xen-platform: allow its creation with XEN_EMULATE mode,
David Woodhouse <=
- [RFC PATCH v3 34/38] hw/xen: Implement EVTCHNOP_reset, David Woodhouse, 2022/12/15