From d1a499f071b2a223641d2e4f0783eda1ad67d1ae Mon Sep 17 00:00:00 2001

Message-Id: <d1a499f071b2a223641d2e4f0783eda1ad67d1ae@dist-git>

From: Pavel Hrdina <phrdina@redhat.com>

Date: Mon, 13 Aug 2018 19:21:52 +0200

Subject: [PATCH] conf: Move hugepage XML validation check out of qemu_command

MIME-Version: 1.0

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We can safely validate the hugepage nodeset attribute at a define time.

This validation is not done for already existing domains when the daemon

is restarted.

All the changes to the tests are necessary because we move the error

from domain start into XML parse.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>

(cherry picked from commit 5c93dfb46d9dff623707994f115b6bd7ca4f0682)

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1615461

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>

Reviewed-by: Ján Tomko <jtomko@redhat.com>

---

 src/conf/domain_conf.c                        | 32 +++++++++++++++++

 src/qemu/qemu_command.c                       | 34 -------------------

 .../seclabel-dynamic-none-relabel.xml         |  2 +-

 tests/qemuxml2argvtest.c                      | 18 +++++-----

 .../hugepages-default-1G-nodeset-2M.xml       |  1 -

 .../qemuxml2xmloutdata/hugepages-nodeset.xml  |  1 -

 .../hugepages-numa-nodeset-nonexist.xml       |  1 -

 .../seclabel-dynamic-none-relabel.xml         |  2 +-

 tests/qemuxml2xmltest.c                       |  3 --

 9 files changed, 43 insertions(+), 51 deletions(-)

 delete mode 120000 tests/qemuxml2xmloutdata/hugepages-default-1G-nodeset-2M.xml

 delete mode 120000 tests/qemuxml2xmloutdata/hugepages-nodeset.xml

 delete mode 120000 tests/qemuxml2xmloutdata/hugepages-numa-nodeset-nonexist.xml

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c

index a05aad056d..280bbdf35c 100644

--- a/src/conf/domain_conf.c

+++ b/src/conf/domain_conf.c

@@ -6142,6 +6142,35 @@ virDomainDefLifecycleActionValidate(const virDomainDef *def)

 }

+static int

+virDomainDefMemtuneValidate(const virDomainDef *def)

+{

+    const virDomainMemtune *mem = &(def->mem);

+    size_t i;

+    ssize_t pos = virDomainNumaGetNodeCount(def->numa) - 1;

+

+    for (i = 0; i < mem->nhugepages; i++) {

+        ssize_t nextBit;

+

+        if (!mem->hugepages[i].nodemask) {

+            /* This is the master hugepage to use. Skip it as it has no

+             * nodemask anyway. */

+            continue;

+        }

+

+        nextBit = virBitmapNextSetBit(mem->hugepages[i].nodemask, pos);

+        if (nextBit >= 0) {

+            virReportError(VIR_ERR_XML_DETAIL,

+                           _("hugepages: node %zd not found"),

+                           nextBit);

+            return -1;

+        }

+    }

+

+    return 0;

+}

+

+

 static int

 virDomainDefValidateInternal(const virDomainDef *def)

 {

@@ -6177,6 +6206,9 @@ virDomainDefValidateInternal(const virDomainDef *def)

     if (virDomainDefLifecycleActionValidate(def) < 0)

         return -1;

+    if (virDomainDefMemtuneValidate(def) < 0)

+        return -1;

+

     return 0;

 }

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c

index 954265feb0..f2b64ed720 100644

--- a/src/qemu/qemu_command.c

+++ b/src/qemu/qemu_command.c

@@ -7482,16 +7482,6 @@ qemuBuildMemPathStr(virQEMUDriverConfigPtr cfg,

     if (!def->mem.nhugepages)

         return 0;

-    if (def->mem.hugepages[0].nodemask) {

-        ssize_t next_bit = virBitmapNextSetBit(def->mem.hugepages[0].nodemask, -1);

-        if (next_bit >= 0) {

-            virReportError(VIR_ERR_XML_DETAIL,

-                           _("hugepages: node %zd not found"),

-                           next_bit);

-            return -1;

-        }

-    }

-

     /* There is one special case: if user specified "huge"

      * pages of regular system pages size.

      * And there is nothing to do in this case.

@@ -7624,30 +7614,6 @@ qemuBuildNumaArgStr(virQEMUDriverConfigPtr cfg,

     if (!virDomainNumatuneNodesetIsAvailable(def->numa, priv->autoNodeset))

         goto cleanup;

-    for (i = 0; i < def->mem.nhugepages; i++) {

-        ssize_t next_bit, pos = 0;

-

-        if (!def->mem.hugepages[i].nodemask) {

-            /* This is the master hugepage to use. Skip it as it has no

-             * nodemask anyway. */

-            continue;

-        }

-

-        if (ncells) {

-            /* Fortunately, we allow only guest NUMA nodes to be continuous

-             * starting from zero. */

-            pos = ncells - 1;

-        }

-

-        next_bit = virBitmapNextSetBit(def->mem.hugepages[i].nodemask, pos);

-        if (next_bit >= 0) {

-            virReportError(VIR_ERR_XML_DETAIL,

-                           _("hugepages: node %zd not found"),

-                           next_bit);

-            goto cleanup;

-        }

-    }

-

     if (VIR_ALLOC_N(nodeBackends, ncells) < 0)

         goto cleanup;

diff --git a/tests/qemuxml2argvdata/seclabel-dynamic-none-relabel.xml b/tests/qemuxml2argvdata/seclabel-dynamic-none-relabel.xml

index 47f253b5f7..e954250009 100644

--- a/tests/qemuxml2argvdata/seclabel-dynamic-none-relabel.xml

+++ b/tests/qemuxml2argvdata/seclabel-dynamic-none-relabel.xml

@@ -5,7 +5,7 @@

   <currentMemory unit='KiB'>262144</currentMemory>

   <memoryBacking>

     <hugepages>

-      <page size='2048' unit='KiB' nodeset='0'/>

+      <page size='2048' unit='KiB'/>

     </hugepages>

   </memoryBacking>

   <vcpu placement='static'>4</vcpu>

diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c

index bd5fdf9412..f82bca2637 100644

--- a/tests/qemuxml2argvtest.c

+++ b/tests/qemuxml2argvtest.c

@@ -959,12 +959,12 @@ mymain(void)

     DO_TEST("hugepages-default", NONE);

     DO_TEST("hugepages-default-2M", NONE);

     DO_TEST("hugepages-default-system-size", NONE);

-    DO_TEST("hugepages-default-1G-nodeset-2M", NONE);

-    DO_TEST_FAILURE("hugepages-nodeset", NONE);

-    DO_TEST_FAILURE("hugepages-nodeset-nonexist",

-                    QEMU_CAPS_DEVICE_PC_DIMM,

-                    QEMU_CAPS_OBJECT_MEMORY_FILE,

-                    QEMU_CAPS_OBJECT_MEMORY_FILE_DISCARD);

+    DO_TEST_PARSE_ERROR("hugepages-default-1G-nodeset-2M", NONE);

+    DO_TEST_PARSE_ERROR("hugepages-nodeset", NONE);

+    DO_TEST_PARSE_ERROR("hugepages-nodeset-nonexist",

+                        QEMU_CAPS_DEVICE_PC_DIMM,

+                        QEMU_CAPS_OBJECT_MEMORY_FILE,

+                        QEMU_CAPS_OBJECT_MEMORY_FILE_DISCARD);

     DO_TEST("hugepages-numa-default",

             QEMU_CAPS_OBJECT_MEMORY_FILE);

     DO_TEST("hugepages-numa-default-2M",

@@ -979,9 +979,9 @@ mymain(void)

     DO_TEST("hugepages-numa-nodeset-part",

             QEMU_CAPS_OBJECT_MEMORY_RAM,

             QEMU_CAPS_OBJECT_MEMORY_FILE);

-    DO_TEST_FAILURE("hugepages-numa-nodeset-nonexist",

-                    QEMU_CAPS_OBJECT_MEMORY_RAM,

-                    QEMU_CAPS_OBJECT_MEMORY_FILE);

+    DO_TEST_PARSE_ERROR("hugepages-numa-nodeset-nonexist",

+                        QEMU_CAPS_OBJECT_MEMORY_RAM,

+                        QEMU_CAPS_OBJECT_MEMORY_FILE);

     DO_TEST("hugepages-shared",

             QEMU_CAPS_OBJECT_MEMORY_RAM,

             QEMU_CAPS_OBJECT_MEMORY_FILE);

diff --git a/tests/qemuxml2xmloutdata/hugepages-default-1G-nodeset-2M.xml b/tests/qemuxml2xmloutdata/hugepages-default-1G-nodeset-2M.xml

deleted file mode 120000

index 3d8eb7616e..0000000000

--- a/tests/qemuxml2xmloutdata/hugepages-default-1G-nodeset-2M.xml

+++ /dev/null

@@ -1 +0,0 @@

-../qemuxml2argvdata/hugepages-default-1G-nodeset-2M.xml

\ No newline at end of file

diff --git a/tests/qemuxml2xmloutdata/hugepages-nodeset.xml b/tests/qemuxml2xmloutdata/hugepages-nodeset.xml

deleted file mode 120000

index b55838b780..0000000000

--- a/tests/qemuxml2xmloutdata/hugepages-nodeset.xml

+++ /dev/null

@@ -1 +0,0 @@

-../qemuxml2argvdata/hugepages-nodeset.xml

\ No newline at end of file

diff --git a/tests/qemuxml2xmloutdata/hugepages-numa-nodeset-nonexist.xml b/tests/qemuxml2xmloutdata/hugepages-numa-nodeset-nonexist.xml

deleted file mode 120000

index d490edca69..0000000000

--- a/tests/qemuxml2xmloutdata/hugepages-numa-nodeset-nonexist.xml

+++ /dev/null

@@ -1 +0,0 @@

-../qemuxml2argvdata/hugepages-numa-nodeset-nonexist.xml

\ No newline at end of file

diff --git a/tests/qemuxml2xmloutdata/seclabel-dynamic-none-relabel.xml b/tests/qemuxml2xmloutdata/seclabel-dynamic-none-relabel.xml

index 050967b4ee..bfa66b8deb 100644

--- a/tests/qemuxml2xmloutdata/seclabel-dynamic-none-relabel.xml

+++ b/tests/qemuxml2xmloutdata/seclabel-dynamic-none-relabel.xml

@@ -5,7 +5,7 @@

   <currentMemory unit='KiB'>262144</currentMemory>

   <memoryBacking>

     <hugepages>

-      <page size='2048' unit='KiB' nodeset='0'/>

+      <page size='2048' unit='KiB'/>

     </hugepages>

   </memoryBacking>

   <vcpu placement='static'>4</vcpu>

diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c

index acbe2f7133..aa543e9e51 100644

--- a/tests/qemuxml2xmltest.c

+++ b/tests/qemuxml2xmltest.c

@@ -336,13 +336,10 @@ mymain(void)

     DO_TEST("hugepages-default", NONE);

     DO_TEST("hugepages-default-2M", NONE);

     DO_TEST("hugepages-default-system-size", NONE);

-    DO_TEST("hugepages-default-1G-nodeset-2M", NONE);

-    DO_TEST("hugepages-nodeset", NONE);

     DO_TEST("hugepages-numa-default-2M", NONE);

     DO_TEST("hugepages-numa-default-dimm", NONE);

     DO_TEST("hugepages-numa-nodeset", NONE);

     DO_TEST("hugepages-numa-nodeset-part", NONE);

-    DO_TEST("hugepages-numa-nodeset-nonexist", NONE);

     DO_TEST("hugepages-shared", NONE);

     DO_TEST("hugepages-memaccess", NONE);

     DO_TEST("hugepages-memaccess2", NONE);

-- 

2.18.0