8:33 a.m.
My day started like this:
# virt-install --connect qemu:///system --arch mips --machine malta --memory 256 --disk
none --import
Using default --name vm-mips
Starting install...
ERROR XML error: No PCI buses available
Needless to say, it ended up completely ruined.
Chained to this message are the patches I've created in an attempt to
remedy the highly unfortunate situation, with hope that they'll be
treated with warmth, understanding and perhaps even applied to the
libvirt tree.
Yours,
Lubo
8:33 a.m.
New subject: [PATCH 1/3] util: add ARCH_IS_MIPS helper macro
Identifies all of various MIPS sub-architectures: 32-bit or 64-bit,
little-endian or big-endian.
Signed-off-by: Lubomir Rintel <lkundrak(a)v3.sk>
---
src/util/virarch.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/src/util/virarch.h b/src/util/virarch.h
index 528f84f8a5..81b1b27a57 100644
--- a/src/util/virarch.h
+++ b/src/util/virarch.h
@@ -95,6 +95,11 @@ typedef enum {
#define ARCH_IS_S390(arch) ((arch) == VIR_ARCH_S390 ||\
(arch) == VIR_ARCH_S390X)
+#define ARCH_IS_MIPS(arch) ((arch) == VIR_ARCH_MIPS ||\
+ (arch) == VIR_ARCH_MIPSEL ||\
+ (arch) == VIR_ARCH_MIPS64 ||\
+ (arch) == VIR_ARCH_MIPS64EL)
+
#define ARCH_IS_MIPS64(arch) ((arch) == VIR_ARCH_MIPS64 ||\
(arch) == VIR_ARCH_MIPS64EL)
--
2.34.1
8:33 a.m.
New subject: [PATCH 2/3] qemu: add qemuDomainIsMipsMalta()
This identifies various MIPS Malta machines, be it 32-bit or 64-bit,
little-endian or big-endian.
Signed-off-by: Lubomir Rintel <lkundrak(a)v3.sk>
---
src/qemu/qemu_domain.c | 21 +++++++++++++++++++++
src/qemu/qemu_domain.h | 1 +
2 files changed, 22 insertions(+)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 6b915d7535..0bae9b9202 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -8647,6 +8647,20 @@ qemuDomainMachineIsPSeries(const char *machine,
}
+static bool
+qemuDomainMachineIsMipsMalta(const char *machine,
+ const virArch arch)
+{
+ if (!ARCH_IS_MIPS(arch))
+ return false;
+
+ if (STREQ(machine, "malta"))
+ return true;
+
+ return false;
+}
+
+
/* You should normally avoid this function and use
* qemuDomainHasBuiltinIDE() instead. */
bool
@@ -8719,6 +8733,13 @@ qemuDomainIsPSeries(const virDomainDef *def)
}
+bool
+qemuDomainIsMipsMalta(const virDomainDef *def)
+{
+ return qemuDomainMachineIsMipsMalta(def->os.machine, def->os.arch);
+}
+
+
bool
qemuDomainHasPCIRoot(const virDomainDef *def)
{
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index e5046367e3..78474b3f73 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -770,6 +770,7 @@ bool qemuDomainIsS390CCW(const virDomainDef *def);
bool qemuDomainIsARMVirt(const virDomainDef *def);
bool qemuDomainIsRISCVVirt(const virDomainDef *def);
bool qemuDomainIsPSeries(const virDomainDef *def);
+bool qemuDomainIsMipsMalta(const virDomainDef *def);
bool qemuDomainHasPCIRoot(const virDomainDef *def);
bool qemuDomainHasPCIeRoot(const virDomainDef *def);
bool qemuDomainHasBuiltinIDE(const virDomainDef *def);
--
2.34.1
8:33 a.m.
New subject: [PATCH 3/3] qemu: add PCI root to MIPS Malta machine
MIPS Malta (and no other supported MIPS machine) has a PCI bus.
Signed-off-by: Lubomir Rintel <lkundrak(a)v3.sk>
---
src/qemu/qemu_domain.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 0bae9b9202..b7aad65048 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -3703,6 +3703,14 @@ qemuDomainDefAddDefaultDevices(virQEMUDriver *driver,
addPCIRoot = true;
break;
+ case VIR_ARCH_MIPS:
+ case VIR_ARCH_MIPSEL:
+ case VIR_ARCH_MIPS64:
+ case VIR_ARCH_MIPS64EL:
+ if (qemuDomainIsMipsMalta(def))
+ addPCIRoot = true;
+ break;
+
case VIR_ARCH_ARMV7B:
case VIR_ARCH_CRIS:
case VIR_ARCH_ITANIUM:
@@ -3710,10 +3718,6 @@ qemuDomainDefAddDefaultDevices(virQEMUDriver *driver,
case VIR_ARCH_M68K:
case VIR_ARCH_MICROBLAZE:
case VIR_ARCH_MICROBLAZEEL:
- case VIR_ARCH_MIPS:
- case VIR_ARCH_MIPSEL:
- case VIR_ARCH_MIPS64:
- case VIR_ARCH_MIPS64EL:
case VIR_ARCH_OR32:
case VIR_ARCH_PARISC:
case VIR_ARCH_PARISC64:
--
2.34.1
3:09 a.m.
On 2/1/22 15:33, Lubomir Rintel wrote:
My day started like this:
# virt-install --connect qemu:///system --arch mips --machine malta --memory 256 --disk
none --import
Using default --name vm-mips
Starting install...
ERROR XML error: No PCI buses available
Needless to say, it ended up completely ruined.
Chained to this message are the patches I've created in an attempt to
remedy the highly unfortunate situation, with hope that they'll be
treated with warmth, understanding and perhaps even applied to the
libvirt tree.
Yours,
Lubo
Reviewed-by: Michal Privoznik <mprivozn(a)redhat.com>
and pushed.
Michal
9:17 a.m.
On 2/2/22 4:09 AM, Michal Prívozník wrote:
On 2/1/22 15:33, Lubomir Rintel wrote:
> My day started like this:
>
> # virt-install --connect qemu:///system --arch mips --machine malta --memory 256
--disk none --import
> Using default --name vm-mips
>
> Starting install...
> ERROR XML error: No PCI buses available
>
> Needless to say, it ended up completely ruined.
>
> Chained to this message are the patches I've created in an attempt to
> remedy the highly unfortunate situation, with hope that they'll be
> treated with warmth, understanding and perhaps even applied to the
> libvirt tree.
>
Hi Lubo, after these patches was the VM usefully usable, did this simply
start up?
There is effectively no qemu-system-mips* mips coverage in virt-install
or libvirt unit test suites, we should add some if we don't want this to
regress. If the XML virt-install generates for you is useful, we could
drop it into libvirt's qemuxml2argvtest
Thanks,
Cole
1003
days inactive
1024
days old
5 comments
3 participants
participants (3)
-
Cole Robinson -
Lubomir Rintel -
Michal Prívozník