7:08 p.m.
Currently non-x86 guests must have <acpi/> defined in <features> to
prevent libvirt from running qemu with -no-acpi. Although it works, it
is a hack.
Instead add a capability flag which indicates whether qemu understands
the -no-acpi option. Use it to control whether libvirt emits -no-acpi.
Current versions of qemu always display -no-acpi in their help output,
so this patch has no effect. However the development version of qemu
has been modified such that -no-acpi is only displayed when it is
actually supported.
Signed-off-by: Michael Ellerman <michael(a)ellerman.id.au>
---
src/qemu/qemu_capabilities.c | 3 +++
src/qemu/qemu_capabilities.h | 1 +
src/qemu/qemu_command.c | 6 ++++--
3 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index e69d601..de2bc13 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -142,6 +142,7 @@ VIR_ENUM_IMPL(qemuCaps, QEMU_CAPS_LAST,
"cache-unsafe", /* 75 */
"rombar",
"ich9-ahci",
+ "no-acpi",
);
struct qemu_feature_flags {
@@ -1066,6 +1067,8 @@ qemuCapsComputeCmdFlags(const char *help,
qemuCapsSet(flags, QEMU_CAPS_RTC_TD_HACK);
if (strstr(help, "-no-hpet"))
qemuCapsSet(flags, QEMU_CAPS_NO_HPET);
+ if (strstr(help, "-no-acpi"))
+ qemuCapsSet(flags, QEMU_CAPS_NO_ACPI);
if (strstr(help, "-no-kvm-pit-reinjection"))
qemuCapsSet(flags, QEMU_CAPS_NO_KVM_PIT);
if (strstr(help, "-tdf"))
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index 00e5214..08d8457 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -115,6 +115,7 @@ enum qemuCapsFlags {
QEMU_CAPS_DRIVE_CACHE_UNSAFE = 75, /* Is cache=unsafe supported? */
QEMU_CAPS_PCI_ROMBAR = 76, /* -device rombar=0|1 */
QEMU_CAPS_ICH9_AHCI = 77, /* -device ich9-ahci */
+ QEMU_CAPS_NO_ACPI = 78, /* -no-acpi */
QEMU_CAPS_LAST, /* this must always be the last item */
};
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 92a5955..b241147 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -4035,8 +4035,10 @@ qemuBuildCommandLine(virConnectPtr conn,
if (monitor_json && qemuCapsGet(qemuCaps, QEMU_CAPS_NO_SHUTDOWN))
virCommandAddArg(cmd, "-no-shutdown");
- if (!(def->features & (1 << VIR_DOMAIN_FEATURE_ACPI)))
- virCommandAddArg(cmd, "-no-acpi");
+ if (qemuCapsGet(qemuCaps, QEMU_CAPS_NO_ACPI)) {
+ if (!(def->features & (1 << VIR_DOMAIN_FEATURE_ACPI)))
+ virCommandAddArg(cmd, "-no-acpi");
+ }
if (!def->os.bootloader) {
/*
--
1.7.7.3
1:33 p.m.
On 12/19/2011 06:08 PM, Michael Ellerman wrote:
Currently non-x86 guests must have <acpi/> defined in
<features> to
prevent libvirt from running qemu with -no-acpi. Although it works, it
is a hack.
Instead add a capability flag which indicates whether qemu understands
the -no-acpi option. Use it to control whether libvirt emits -no-acpi.
Current versions of qemu always display -no-acpi in their help output,
so this patch has no effect. However the development version of qemu
has been modified such that -no-acpi is only displayed when it is
actually supported.
Signed-off-by: Michael Ellerman <michael(a)ellerman.id.au>
---
src/qemu/qemu_capabilities.c | 3 +++
src/qemu/qemu_capabilities.h | 1 +
src/qemu/qemu_command.c | 6 ++++--
3 files changed, 8 insertions(+), 2 deletions(-)
ACK and pushed, after fixing 'make check' to work with the new feature
bit (see below).
Meanwhile, I see nothing wrong with going one further - if we can tell
from the qemu binary and/or the domain XML which target architecture the
guest will be running in, then we could auto-disable acpi on non-x86
guests, even when qemu -help output mistakenly includes a useless
-no-acpi for that architecture, so that you could avoid the <acpi/> hack
even when targetting qemu that doesn't yet make the -help output context
sensitive. But I'll let you do that as a separate patch.
Here's what I squashed - note that I cheated a bit, and blindly enabled
the new capability bit for all qemu xml tests; it was faster than adding
QEMU_CAPS_NO_ACPI to the bulk of the test entries in qemuxml2argvtest.c,
or editing more than 100 .argv files to remove the -no-acpi argument.
But if you ever expand that test to cover non-x86 XML->argv conversions,
then we should probably go with the longer approach of enabling the
capability per-test where it matters, rather than globally enabling it
for the duration of the test.
diff --git i/tests/qemuhelptest.c w/tests/qemuhelptest.c
index 4258fc9..f31c903 100644
--- i/tests/qemuhelptest.c
+++ w/tests/qemuhelptest.c
@@ -81,11 +81,12 @@ static int testHelpStrParsing(const void *data)
goto cleanup;
if (STRNEQ(got, expected)) {
- fprintf(stderr,
- "%s: computed flags do not match: got %s, expected %s\n",
- info->name, got, expected);
+ if (virTestGetVerbose() || virTestGetDebug())
+ fprintf(stderr,
+ "%s: computed flags do not match: got %s, expected
%s\n",
+ info->name, got, expected);
- if (getenv("VIR_TEST_DEBUG"))
+ if (virTestGetDebug())
printMismatchedFlags(flags, info->flags);
goto cleanup;
@@ -145,7 +146,8 @@ mymain(void)
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
QEMU_CAPS_DRIVE,
- QEMU_CAPS_NAME);
+ QEMU_CAPS_NAME,
+ QEMU_CAPS_NO_ACPI);
DO_TEST("kvm-74", 9001, 1, 74,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
@@ -158,7 +160,8 @@ mymain(void)
QEMU_CAPS_DRIVE_FORMAT,
QEMU_CAPS_MEM_PATH,
QEMU_CAPS_TDF,
- QEMU_CAPS_NO_SHUTDOWN);
+ QEMU_CAPS_NO_SHUTDOWN,
+ QEMU_CAPS_NO_ACPI);
DO_TEST("kvm-83-rhel56", 9001, 1, 83,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
@@ -185,7 +188,8 @@ mymain(void)
QEMU_CAPS_DRIVE_READONLY,
QEMU_CAPS_SMBIOS_TYPE,
QEMU_CAPS_SPICE,
- QEMU_CAPS_NO_SHUTDOWN);
+ QEMU_CAPS_NO_SHUTDOWN,
+ QEMU_CAPS_NO_ACPI);
DO_TEST("qemu-0.10.5", 10005, 0, 0,
QEMU_CAPS_KQEMU,
QEMU_CAPS_VNC_COLON,
@@ -205,7 +209,8 @@ mymain(void)
QEMU_CAPS_RTC_TD_HACK,
QEMU_CAPS_NO_HPET,
QEMU_CAPS_VGA_NONE,
- QEMU_CAPS_NO_SHUTDOWN);
+ QEMU_CAPS_NO_SHUTDOWN,
+ QEMU_CAPS_NO_ACPI);
DO_TEST("qemu-kvm-0.10.5", 10005, 1, 0,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
@@ -231,7 +236,8 @@ mymain(void)
QEMU_CAPS_TDF,
QEMU_CAPS_NESTING,
QEMU_CAPS_VGA_NONE,
- QEMU_CAPS_NO_SHUTDOWN);
+ QEMU_CAPS_NO_SHUTDOWN,
+ QEMU_CAPS_NO_ACPI);
DO_TEST("kvm-86", 10050, 1, 0,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
@@ -257,7 +263,8 @@ mymain(void)
QEMU_CAPS_NESTING,
QEMU_CAPS_SMBIOS_TYPE,
QEMU_CAPS_VGA_NONE,
- QEMU_CAPS_NO_SHUTDOWN);
+ QEMU_CAPS_NO_SHUTDOWN,
+ QEMU_CAPS_NO_ACPI);
DO_TEST("qemu-kvm-0.11.0-rc2", 10092, 1, 0,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
@@ -288,7 +295,8 @@ mymain(void)
QEMU_CAPS_NAME_PROCESS,
QEMU_CAPS_SMBIOS_TYPE,
QEMU_CAPS_VGA_NONE,
- QEMU_CAPS_NO_SHUTDOWN);
+ QEMU_CAPS_NO_SHUTDOWN,
+ QEMU_CAPS_NO_ACPI);
DO_TEST("qemu-0.12.1", 12001, 0, 0,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
@@ -320,7 +328,8 @@ mymain(void)
QEMU_CAPS_MIGRATE_QEMU_FD,
QEMU_CAPS_DRIVE_AIO,
QEMU_CAPS_NO_SHUTDOWN,
- QEMU_CAPS_PCI_ROMBAR);
+ QEMU_CAPS_PCI_ROMBAR,
+ QEMU_CAPS_NO_ACPI);
DO_TEST("qemu-kvm-0.12.1.2-rhel60", 12001, 1, 0,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
@@ -366,7 +375,8 @@ mymain(void)
QEMU_CAPS_PIIX4_USB_UHCI,
QEMU_CAPS_USB_HUB,
QEMU_CAPS_NO_SHUTDOWN,
- QEMU_CAPS_PCI_ROMBAR);
+ QEMU_CAPS_PCI_ROMBAR,
+ QEMU_CAPS_NO_ACPI);
DO_TEST("qemu-kvm-0.12.3", 12003, 1, 0,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
@@ -405,7 +415,8 @@ mymain(void)
QEMU_CAPS_MIGRATE_QEMU_FD,
QEMU_CAPS_DRIVE_AIO,
QEMU_CAPS_NO_SHUTDOWN,
- QEMU_CAPS_PCI_ROMBAR);
+ QEMU_CAPS_PCI_ROMBAR,
+ QEMU_CAPS_NO_ACPI);
DO_TEST("qemu-kvm-0.13.0", 13000, 1, 0,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
@@ -460,7 +471,8 @@ mymain(void)
QEMU_CAPS_PCI_OHCI,
QEMU_CAPS_USB_HUB,
QEMU_CAPS_NO_SHUTDOWN,
- QEMU_CAPS_PCI_ROMBAR);
+ QEMU_CAPS_PCI_ROMBAR,
+ QEMU_CAPS_NO_ACPI);
DO_TEST("qemu-kvm-0.12.1.2-rhel61", 12001, 1, 0,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
@@ -511,7 +523,8 @@ mymain(void)
QEMU_CAPS_PIIX4_USB_UHCI,
QEMU_CAPS_USB_HUB,
QEMU_CAPS_NO_SHUTDOWN,
- QEMU_CAPS_PCI_ROMBAR);
+ QEMU_CAPS_PCI_ROMBAR,
+ QEMU_CAPS_NO_ACPI);
DO_TEST("qemu-kvm-0.12.1.2-rhel62-beta", 12001, 1, 0,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
@@ -570,7 +583,8 @@ mymain(void)
QEMU_CAPS_ICH9_USB_EHCI1,
QEMU_CAPS_USB_HUB,
QEMU_CAPS_NO_SHUTDOWN,
- QEMU_CAPS_PCI_ROMBAR);
+ QEMU_CAPS_PCI_ROMBAR,
+ QEMU_CAPS_NO_ACPI);
DO_TEST("qemu-1.0", 1000000, 0, 0,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
@@ -632,7 +646,8 @@ mymain(void)
QEMU_CAPS_USB_HUB,
QEMU_CAPS_NO_SHUTDOWN,
QEMU_CAPS_PCI_ROMBAR,
- QEMU_CAPS_ICH9_AHCI);
+ QEMU_CAPS_ICH9_AHCI,
+ QEMU_CAPS_NO_ACPI);
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
diff --git i/tests/qemuxml2argvtest.c w/tests/qemuxml2argvtest.c
index 228d052..e1221eb 100644
--- i/tests/qemuxml2argvtest.c
+++ w/tests/qemuxml2argvtest.c
@@ -145,6 +145,7 @@ static int testCompareXMLToArgvFiles(const char *xml,
qemuCapsSetList(extraFlags,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
+ QEMU_CAPS_NO_ACPI,
QEMU_CAPS_LAST);
if (qemudCanonicalizeMachine(&driver, vmdef) < 0)
diff --git i/tests/qemuxmlnstest.c w/tests/qemuxmlnstest.c
index 86cf974..0432cc4 100644
--- i/tests/qemuxmlnstest.c
+++ w/tests/qemuxmlnstest.c
@@ -89,6 +89,7 @@ static int testCompareXMLToArgvFiles(const char *xml,
qemuCapsSetList(extraFlags,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
+ QEMU_CAPS_NO_ACPI,
QEMU_CAPS_LAST);
if (qemudCanonicalizeMachine(&driver, vmdef) < 0)
--
Eric Blake eblake(a)redhat.com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
4752
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