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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [RFC 1/2] Domain Groups - VMM Support
diffstat domgrps-vmm.patch arch/ia64/xen/xensetup.c | 7 arch/powerpc/powerpc64/hypercall_table.S | 1 arch/powerpc/setup.c | 7 arch/x86/setup.c | 8 arch/x86/x86_32/entry.S | 2 arch/x86/x86_64/entry.S | 3 common/Makefile | 2 common/domain.c | 8 common/domctl.c | 10 common/domgrp.c | 315 +++++++++++++++++++++++++++++++ common/domgrpctl.c | 134 +++++++++++++ include/public/domctl.h | 2 include/public/domgrpctl.h | 86 ++++++++ include/public/xen.h | 7 include/xen/domgrp.h | 36 +++ include/xen/hypercall.h | 5 include/xen/sched.h | 26 ++ 17 files changed, 657 insertions(+), 2 deletions(-) diff -urN xen-unstable/xen/arch/ia64/xen/xensetup.c
xen-unstable-trp-domgrps-rebase-tip/xen/arch/ia64/xen/xensetup.c
--- xen-unstable/xen/arch/ia64/xen/xensetup.c 2007-10-12 13:09:32.000000000
-0400
+++ xen-unstable-trp-domgrps-rebase-tip/xen/arch/ia64/xen/xensetup.c
2007-11-19 18:42:00.000000000 -0500
@@ -15,6 +15,7 @@
#include <xen/version.h>
#include <xen/console.h>
#include <xen/domain.h>
+#include <xen/domgrp.h>
#include <xen/serial.h>
#include <xen/trace.h>
#include <xen/keyhandler.h>
@@ -550,6 +551,10 @@
expose_p2m_init();
+ /* initialize domain groups */
+ if (init_domain_groups())
+ panic("Error creating default groups\n");
+
/* Create initial domain 0. */
dom0 = domain_create(0, 0, DOM0_SSIDREF);
if (dom0 == NULL)
@@ -559,6 +564,8 @@
panic("Cannot allocate dom0 vcpu 0\n");
dom0->is_privileged = 1;
+ if (add_dom_to_grp(dom0, 0))
+ panic("Error adding dom0 to grp0\n");
/*
* We're going to setup domain0 using the module(s) that we stashed safely
diff -urN xen-unstable/xen/arch/powerpc/powerpc64/hypercall_table.S
xen-unstable-trp-domgrps-rebase-tip/xen/arch/powerpc/powerpc64/hypercall_table.S
--- xen-unstable/xen/arch/powerpc/powerpc64/hypercall_table.S 2007-08-06
17:59:54.000000000 -0400
+++
xen-unstable-trp-domgrps-rebase-tip/xen/arch/powerpc/powerpc64/hypercall_table.S
2007-11-19 18:42:00.000000000 -0500
@@ -41,6 +41,7 @@
.quad 0 /* do_hvm_op */
.quad do_sysctl /* 35 */
.quad do_domctl
+ .quad do_domgrpctl
.rept NR_hypercalls-((.-__hypercall_table)/8)
.quad do_ni_hypercall
.endr
diff -urN xen-unstable/xen/arch/powerpc/setup.c
xen-unstable-trp-domgrps-rebase-tip/xen/arch/powerpc/setup.c
--- xen-unstable/xen/arch/powerpc/setup.c 2007-09-13 14:40:11.000000000
-0400
+++ xen-unstable-trp-domgrps-rebase-tip/xen/arch/powerpc/setup.c
2007-11-19 18:42:00.000000000 -0500
@@ -32,6 +32,7 @@
#include <xen/trace.h>
#include <xen/mm.h>
#include <xen/domain.h>
+#include <xen/domgrp.h>
#include <xen/gdbstub.h>
#include <xen/symbols.h>
#include <xen/keyhandler.h>
@@ -365,6 +366,10 @@
/* This cannot be called before secondary cpus are marked online. */
percpu_free_unused_areas();
+ /* initialize domain groups */
+ if (init_domain_groups())
+ panic("Error creating default groups\n");
+
/* Create initial domain 0. */
dom0 = domain_create(0, 0, DOM0_SSIDREF);
if (dom0 == NULL)
@@ -375,6 +380,8 @@
dom0->vcpu[0]->cpu_affinity = cpumask_of_cpu(0);
dom0->is_privileged = 1;
+ if (add_dom_to_grp(dom0, 0))
+ panic("Error adding dom0 to grp0\n");
/* scrub_heap_pages() requires IRQs enabled, and we're post IRQ setup... */
local_irq_enable();
diff -urN xen-unstable/xen/arch/x86/setup.c
xen-unstable-trp-domgrps-rebase-tip/xen/arch/x86/setup.c
--- xen-unstable/xen/arch/x86/setup.c 2007-12-17 16:45:04.000000000 -0500
+++ xen-unstable-trp-domgrps-rebase-tip/xen/arch/x86/setup.c 2007-12-17
16:44:23.000000000 -0500
@@ -3,6 +3,7 @@
#include <xen/lib.h>
#include <xen/sched.h>
#include <xen/domain.h>
+#include <xen/domgrp.h>
#include <xen/serial.h>
#include <xen/softirq.h>
#include <xen/acpi.h>
@@ -955,6 +956,10 @@
if ( opt_watchdog )
watchdog_enable();
+ /* initialize domain groups */
+ if (init_domain_groups())
+ panic("Error creating default groups\n");
+
/* Create initial domain 0. */
dom0 = domain_create(0, 0, DOM0_SSIDREF);
if ( (dom0 == NULL) || (alloc_vcpu(dom0, 0, 0) == NULL) )
@@ -962,6 +967,9 @@
dom0->is_privileged = 1;
+ if (add_dom_to_grp(dom0, 0))
+ panic("Error adding dom0 to grp0\n");
+
/* Grab the DOM0 command line. */
cmdline = (char *)(mod[0].string ? __va(mod[0].string) : NULL);
if ( (cmdline != NULL) || (kextra != NULL) )
diff -urN xen-unstable/xen/arch/x86/x86_32/entry.S
xen-unstable-trp-domgrps-rebase-tip/xen/arch/x86/x86_32/entry.S
--- xen-unstable/xen/arch/x86/x86_32/entry.S 2007-11-19 10:38:08.000000000
-0500
+++ xen-unstable-trp-domgrps-rebase-tip/xen/arch/x86/x86_32/entry.S
2007-11-19 18:42:00.000000000 -0500
@@ -682,6 +682,7 @@
.long do_sysctl /* 35 */
.long do_domctl
.long do_kexec_op
+ .long do_domgrpctl
.rept NR_hypercalls-((.-hypercall_table)/4)
.long do_ni_hypercall
.endr
@@ -725,6 +726,7 @@
.byte 1 /* do_sysctl */ /* 35 */
.byte 1 /* do_domctl */
.byte 2 /* do_kexec_op */
+ .byte 1 /* do_domgrpctl */
.rept NR_hypercalls-(.-hypercall_args_table)
.byte 0 /* do_ni_hypercall */
.endr
diff -urN xen-unstable/xen/arch/x86/x86_64/entry.S
xen-unstable-trp-domgrps-rebase-tip/xen/arch/x86/x86_64/entry.S
--- xen-unstable/xen/arch/x86/x86_64/entry.S 2007-11-19 10:38:08.000000000
-0500
+++ xen-unstable-trp-domgrps-rebase-tip/xen/arch/x86/x86_64/entry.S
2007-11-19 18:43:06.000000000 -0500
@@ -672,6 +672,7 @@
.quad do_sysctl /* 35 */
.quad do_domctl
.quad do_kexec_op
+ .quad do_domgrpctl
.rept NR_hypercalls-((.-hypercall_table)/8)
.quad do_ni_hypercall
.endr
@@ -715,7 +716,7 @@
.byte 1 /* do_sysctl */ /* 35 */
.byte 1 /* do_domctl */
.byte 2 /* do_kexec */
- .byte 1 /* do_xsm_op */
+ .byte 1 /* do_domgrpctl */
.rept NR_hypercalls-(.-hypercall_args_table)
.byte 0 /* do_ni_hypercall */
.endr
diff -urN xen-unstable/xen/common/domain.c
xen-unstable-trp-domgrps-rebase-tip/xen/common/domain.c
--- xen-unstable/xen/common/domain.c 2007-11-19 10:38:08.000000000 -0500
+++ xen-unstable-trp-domgrps-rebase-tip/xen/common/domain.c 2007-11-19
18:42:00.000000000 -0500
@@ -11,6 +11,7 @@
#include <xen/errno.h>
#include <xen/sched.h>
#include <xen/domain.h>
+#include <xen/domgrp.h>
#include <xen/mm.h>
#include <xen/event.h>
#include <xen/time.h>
@@ -57,6 +58,7 @@
memset(d, 0, sizeof(*d));
d->domain_id = domid;
+ d->group_id = INVAL_GROUP_ID;
if ( xsm_alloc_security_domain(d) != 0 )
{
@@ -241,6 +243,8 @@
rcu_assign_pointer(*pd, d);
rcu_assign_pointer(domain_hash[DOMAIN_HASH(domid)], d);
spin_unlock(&domlist_update_lock);
+
+ add_dom_to_grp(d, NULL_GROUP_ID);
}
return d;
@@ -388,6 +392,8 @@
{
struct vcpu *v;
+ del_dom_from_grp(d);
+
if ( d->domain_id == 0 )
dom0_shutdown(reason);
@@ -522,6 +528,8 @@
if ( _atomic_read(old) != 0 )
return;
+ del_dom_from_grp(d);
+
/* Delete from task list and task hashtable. */
spin_lock(&domlist_update_lock);
pd = &domain_list;
diff -urN xen-unstable/xen/common/domctl.c
xen-unstable-trp-domgrps-rebase-tip/xen/common/domctl.c
--- xen-unstable/xen/common/domctl.c 2007-12-17 16:45:04.000000000 -0500
+++ xen-unstable-trp-domgrps-rebase-tip/xen/common/domctl.c 2007-12-17
16:44:23.000000000 -0500
@@ -12,6 +12,7 @@
#include <xen/mm.h>
#include <xen/sched.h>
#include <xen/domain.h>
+#include <xen/domgrp.h>
#include <xen/event.h>
#include <xen/domain_page.h>
#include <xen/trace.h>
@@ -94,8 +95,10 @@
u64 cpu_time = 0;
int flags = XEN_DOMINF_blocked;
struct vcpu_runstate_info runstate;
-
+ struct domain_group *grp;
+
info->domain = d->domain_id;
+ info->group = d->group_id;
info->nr_online_vcpus = 0;
/*
@@ -136,6 +139,9 @@
info->shared_info_frame = mfn_to_gmfn(d, __pa(d->shared_info)>>PAGE_SHIFT);
memcpy(info->handle, d->handle, sizeof(xen_domain_handle_t));
+ grp = find_grp_by_id(info->group);
+ if (grp)
+ memcpy(info->dg_handle, grp->handle,
sizeof(xen_domain_group_handle_t));
}
static unsigned int default_vcpu0_location(void)
@@ -256,6 +262,7 @@
{
struct domain *d = rcu_lock_domain_by_id(op->domain);
ret = -ESRCH;
+
if ( d != NULL )
{
ret = xsm_pausedomain(d);
@@ -426,6 +433,7 @@
{
struct domain *d = rcu_lock_domain_by_id(op->domain);
ret = -ESRCH;
+
if ( d != NULL )
{
ret = xsm_destroydomain(d) ? : domain_kill(d);
diff -urN xen-unstable/xen/common/domgrp.c
xen-unstable-trp-domgrps-rebase-tip/xen/common/domgrp.c
--- xen-unstable/xen/common/domgrp.c 1969-12-31 19:00:00.000000000 -0500
+++ xen-unstable-trp-domgrps-rebase-tip/xen/common/domgrp.c 2007-11-26
16:46:46.000000000 -0500
@@ -0,0 +1,315 @@
+/******************************************************************************
+ * domgrp.c
+ *
+ * Generic domain group-handling functions.
+ *
+ * Author: Chris Bookholt (hap10@xxxxxxxxxxxxxx)
+ */
+
+#include <xen/sched.h>
+#include <xen/list.h>
+#include <xen/xmalloc.h>
+#include <public/domgrpctl.h>
+
+DEFINE_SPINLOCK(domgrplist_update_lock);
+DEFINE_RCU_READ_LOCK(domgrplist_read_lock);
+
+struct list_head domgrplist;
+
+#define SERIALIZE_LINKED_LIST(op_name, list_name) \
+ rcu_read_lock(&grp->op_name##_read_lock); \
+ memset(&info->op_name, 0, sizeof(domid_t)*MAX_GROUP_SIZE); \
+ if (!list_empty(&grp->op_name)) { \
+ i = 0; \
+ list_for_each_entry(dom, &grp->op_name, list_name) { \
+ info->op_name[i] = dom->domain_id; \
+ i++; \
+ } \
+ } else \
+ info->op_name[i] = NULL_GROUP_ID; \
+ rcu_read_unlock(&grp->op_name##_read_lock);
+
+void get_grp_info(struct domain_group *grp, xen_domgrpctl_getgrpinfo_t * info)
+{
+ struct domain *dom;
+ uint16_t i = 0;
+
+ info->dgid = grp->group_id;
+ info->size = grp->size;
+
+ SERIALIZE_LINKED_LIST(member_list, member);
+
+ memcpy(info->handle, grp->handle, sizeof(xen_domain_group_handle_t));
+}
+
+struct domain_group *alloc_domain_group(void)
+{
+ struct domain_group *grp = NULL;
+
+ if ((grp = xmalloc(struct domain_group)) != NULL)
+ memset(grp, 0, sizeof(*grp));
+
+ return grp;
+}
+
+struct domain_group *find_grp_by_id(dgid_t dgid)
+{
+ struct domain_group *grp;
+
+ rcu_read_lock(&domgrplist_read_lock);
+ list_for_each_entry(grp, &domgrplist, groups) {
+ BUG_ON(grp == NULL);
+ if (grp->group_id == dgid)
+ goto out;
+ }
+ grp = NULL;
+ out:
+ rcu_read_unlock(&domgrplist_read_lock);
+ return grp;
+}
+
+uint16_t get_new_group_id(void)
+{
+ static DEFINE_SPINLOCK(domgrpcnt_lock);
+ static dgid_t group_counter = 1;
+ dgid_t ret;
+
+ if (group_counter < NULL_GROUP_ID - 1) {
+ spin_lock(&domgrpcnt_lock);
+ ret = group_counter++;
+ spin_unlock(&domgrpcnt_lock);
+ } else
+ ret = NULL_GROUP_ID;
+ return ret;
+}
+
+struct domain_group *domain_group_create(dgid_t dgid)
+{
+ struct domain_group *grp = NULL, *tail;
+
+ grp = alloc_domain_group();
+ if (!grp)
+ goto out;
+
+ grp->group_id = dgid;
+ grp->size = 0;
+ if (dgid == 0)
+ memset(grp->handle, 0, sizeof(xen_domain_group_handle_t));
+ else if (dgid == NULL_GROUP_ID)
+ memset(grp->handle, 0xFF, sizeof(xen_domain_group_handle_t));
+
+ /* init group's lists */
+ INIT_LIST_HEAD(&grp->member_list);
+
+ /* init group's locks */
+ spin_lock_init(&grp->grp_big_lock);
+ spin_lock_init(&grp->member_list_update_lock);
+
+ /* add new group to domgrplist *
+ * TODO: This is a candidate for optimization. Could
+ * be optimized by maintaining a ptr to the tail, but
+ * list size is small, so search isn't expensive */
+ if (dgid != 0 && dgid != NULL_GROUP_ID) {
+ tail = find_grp_by_id(NULL_GROUP_ID);
+ spin_lock(&domgrplist_update_lock);
+ list_add_tail(&grp->groups, &tail->groups);
+ spin_unlock(&domgrplist_update_lock);
+ } else {
+ spin_lock(&domgrplist_update_lock);
+ list_add_tail(&grp->groups, &domgrplist);
+ spin_unlock(&domgrplist_update_lock);
+ }
+
+ out:
+ return grp;
+}
+
+int dom_in_member_list(domid_t domid, struct domain_group *grp)
+{
+ struct domain *dom;
+ int ret = 0;
+
+ if (grp == NULL) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ rcu_read_lock(&grp->member_list_read_lock);
+ list_for_each_entry(dom, &grp->member_list, member) {
+ if (dom->domain_id == domid) {
+ ret = 1;
+ break;
+ }
+ }
+ rcu_read_unlock(&grp->member_list_read_lock);
+ out:
+ return ret;
+}
+
+#define RM_DOM_FROM_LIST(list_name, entry) \
+ spin_lock(&grp->list_name##_update_lock); \
+ if (!list_empty(&grp->list_name)) \
+ list_del(&dom->entry); \
+ spin_unlock(&grp->list_name##_update_lock);
+
+void del_dom_from_grp(struct domain *dom)
+{
+ struct domain_group *grp;
+
+ grp = find_grp_by_id(dom->group_id);
+
+ if (grp == NULL)
+ goto out;
+
+ if (dom_in_member_list(dom->domain_id, grp) <= 0)
+ goto out;
+
+ RM_DOM_FROM_LIST(member_list, member);
+ dom->group_id = INVAL_GROUP_ID;
+ grp->size--;
+
+ out:
+ return;
+}
+
+int add_dom_to_grp(struct domain *dom, dgid_t dgid)
+{
+ struct domain_group *grp = NULL;
+ int ret = 0;
+
+ grp = find_grp_by_id(dgid);
+ if (grp == NULL) {
+ ret = -ESRCH;
+ goto out;
+ }
+
+ if (grp->size >= MAX_GROUP_SIZE) {
+ ret = -EPERM;
+ goto out;
+ }
+
+ /* skip it if dom is already a member */
+ if (dom_in_member_list(dom->domain_id, grp))
+ goto out;
+
+ /* remove dom from old group */
+ if (dom->group_id != INVAL_GROUP_ID)
+ del_dom_from_grp(dom);
+
+ /* add dom to end of new group list */
+ spin_lock(&grp->member_list_update_lock);
+ list_add_tail(&dom->member, &grp->member_list);
+ spin_unlock(&grp->member_list_update_lock);
+
+ dom->group_id = dgid;
+ dom->grp_big_lock = &grp->grp_big_lock;
+
+ grp->size++;
+ out:
+ return ret;
+}
+
+int pause_grp(dgid_t dgid)
+{
+ int ret = 0;
+ struct domain *member;
+ struct domain_group *grp;
+
+ if (dgid == 0) {
+ ret = -EPERM;
+ goto out;
+ }
+
+ grp = find_grp_by_id(dgid);
+
+ if (grp == NULL) {
+ ret = -ESRCH;
+ goto out;
+ }
+
+ spin_lock_recursive(&grp->grp_big_lock);
+ rcu_read_lock(&grp->member_list_read_lock);
+ /* could ignore interupts during this loop to increase atomicity */
+ list_for_each_entry(member, &grp->member_list, member) {
+ if (member != current->domain && member->domain_id != 0)
+ domain_pause_by_systemcontroller(member);
+ }
+ rcu_read_unlock(&grp->member_list_read_lock);
+ spin_unlock_recursive(&grp->grp_big_lock);
+ out:
+ return ret;
+}
+
+int unpause_grp(dgid_t dgid)
+{
+ int ret = 0;
+ struct domain *member;
+ struct domain_group *grp;
+
+ if (dgid == 0) {
+ ret = -EPERM;
+ goto out;
+ }
+
+ grp = find_grp_by_id(dgid);
+
+ if (grp == NULL) {
+ ret = -ESRCH;
+ goto out;
+ }
+
+ spin_lock_recursive(&grp->grp_big_lock);
+ rcu_read_lock(&grp->member_list_read_lock);
+ /* could ignore interupts during this loop to increase atomicity */
+ list_for_each_entry(member, &grp->member_list, member) {
+ if (member != current->domain && member->domain_id != 0)
+ domain_unpause_by_systemcontroller(member);
+ }
+ rcu_read_unlock(&grp->member_list_read_lock);
+ spin_unlock_recursive(&grp->grp_big_lock);
+ out:
+ return ret;
+}
+
+int domain_group_destroy(dgid_t dgid)
+{
+ int ret = 0;
+ struct domain_group *grp;
+
+ grp = find_grp_by_id(dgid);
+ if (grp == NULL) {
+ ret = -ESRCH;
+ goto out;
+ }
+
+ if (grp->size != 0) {
+ ret = -EPERM;
+ printk(KERN_INFO "refusing to destroy non-emtpry group %d\n",
grp->group_id);
+ goto out;
+ }
+
+ spin_lock(&domgrplist_update_lock);
+ list_del(&grp->groups);
+ spin_unlock(&domgrplist_update_lock);
+
+ xfree(grp);
+ out:
+ return ret;
+}
+
+int init_domain_groups(void)
+{
+ struct domain_group *grp0, *nullgrp;
+ int ret = 0;
+ INIT_LIST_HEAD(&domgrplist);
+
+ /* order matters for creation of default groups:
+ * create default groups in order of ascending dgid so they
+ * are added to the group list in the expected order */
+ grp0 = domain_group_create(0);
+ nullgrp = domain_group_create(NULL_GROUP_ID);
+
+ if (!grp0 || !nullgrp)
+ ret = -ENOMEM;
+ return ret;
+}
diff -urN xen-unstable/xen/common/domgrpctl.c
xen-unstable-trp-domgrps-rebase-tip/xen/common/domgrpctl.c
--- xen-unstable/xen/common/domgrpctl.c 1969-12-31 19:00:00.000000000 -0500
+++ xen-unstable-trp-domgrps-rebase-tip/xen/common/domgrpctl.c 2007-11-19
18:42:00.000000000 -0500
@@ -0,0 +1,134 @@
+/******************************************************************************
+ * domgrpctl.c
+ *
+ * Domain group management operations. For use by node control stack.
+ *
+ * Author: Chris Bookholt (hap10@xxxxxxxxxxxxxx)
+ */
+
+#include <xen/sched.h>
+#include <xen/domgrp.h>
+#include <xen/guest_access.h>
+#include <public/domgrpctl.h>
+#include <asm/current.h>
+
+long do_domgrpctl(XEN_GUEST_HANDLE(xen_domgrpctl_t) u_domgrpctl)
+{
+ long ret = 0;
+ struct xen_domgrpctl curop, *op = &curop;
+ static DEFINE_SPINLOCK(domgrpctl_lock);
+ struct domain_group *grp;
+ dgid_t dgid;
+
+ if (!IS_PRIV(current->domain)) {
+ ret = -EPERM;
+ goto out;
+ }
+
+ if (copy_from_guest(op, u_domgrpctl, 1)) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ if (op->interface_version != XEN_DOMGRPCTL_INTERFACE_VERSION) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ spin_lock(&domgrpctl_lock);
+
+ switch (op->cmd) {
+
+ case XEN_DOMGRPCTL_getgrpinfo:
+ {
+ rcu_read_lock(&domgrplist_read_lock);
+ ret = -ESRCH;
+ dgid = op->u.get_grp_info.dgid;
+
+ list_for_each_entry(grp, &domgrplist, groups) {
+ if (grp->group_id >= dgid) {
+ ret = 0;
+ break;
+ }
+ }
+ if (ret)
+ goto getgrpinfo_out;
+
+ get_grp_info(grp, &op->u.get_grp_info);
+
+ if (copy_to_guest(u_domgrpctl, op, 1))
+ ret = -EFAULT;
+
+ getgrpinfo_out:
+ rcu_read_unlock(&domgrplist_read_lock);
+ break;
+ }
+
+ case XEN_DOMGRPCTL_creategrp:
+ {
+ dgid = get_new_group_id();
+ if (dgid == NULL_GROUP_ID) {
+ ret = -EINVAL;
+ break;
+ }
+
+ grp = domain_group_create(dgid);
+ if (grp == NULL) {
+ ret = -ENOMEM;
+ break;
+ }
+
+ memcpy(grp->handle, op->u.create_grp.handle,
+ sizeof(xen_domain_group_handle_t));
+
+ op->u.create_grp.dgid = grp->group_id;
+ if (copy_to_guest(u_domgrpctl, op, 1))
+ ret = -EFAULT;
+
+ break;
+ }
+
+ case XEN_DOMGRPCTL_joingrp:
+ {
+ domid_t domid;
+ struct domain *dom;
+
+ domid = op->u.join_grp.domid;
+ dgid = op->u.join_grp.dgid;
+
+ dom = get_domain_by_id(domid);
+ if (dom == NULL)
+ ret = -ESRCH;
+ else
+ ret = add_dom_to_grp(dom, dgid);
+ put_domain(dom);
+
+ break;
+ }
+
+ case XEN_DOMGRPCTL_pausegrp:
+ {
+ ret = pause_grp(op->u.pause_grp.dgid);
+ break;
+ }
+
+ case XEN_DOMGRPCTL_unpausegrp:
+ {
+ ret = unpause_grp(op->u.unpause_grp.dgid);
+ break;
+ }
+
+ case XEN_DOMGRPCTL_destroygrp:
+ {
+ ret = domain_group_destroy(op->u.destroy_grp.dgid);
+ break;
+ }
+
+ default:
+ ret = -EINVAL;
+ }
+
+ spin_unlock(&domgrpctl_lock);
+ out:
+ return ret;
+}
diff -urN xen-unstable/xen/common/Makefile
xen-unstable-trp-domgrps-rebase-tip/xen/common/Makefile
--- xen-unstable/xen/common/Makefile 2007-11-19 10:38:08.000000000 -0500
+++ xen-unstable-trp-domgrps-rebase-tip/xen/common/Makefile 2007-11-19
18:42:00.000000000 -0500
@@ -1,6 +1,8 @@
obj-y += bitmap.o
obj-y += domctl.o
+obj-y += domgrpctl.o
obj-y += domain.o
+obj-y += domgrp.o
obj-y += event_channel.o
obj-y += grant_table.o
obj-y += kernel.o
diff -urN xen-unstable/xen/include/public/domctl.h
xen-unstable-trp-domgrps-rebase-tip/xen/include/public/domctl.h
--- xen-unstable/xen/include/public/domctl.h 2007-12-17 16:45:05.000000000
-0500
+++ xen-unstable-trp-domgrps-rebase-tip/xen/include/public/domctl.h
2007-12-17 16:44:23.000000000 -0500
@@ -67,6 +67,7 @@
struct xen_domctl_getdomaininfo {
/* OUT variables. */
domid_t domain; /* Also echoed in domctl.domain */
+ dgid_t group;
/* Domain is scheduled to die. */
#define _XEN_DOMINF_dying 0
#define XEN_DOMINF_dying (1U<<_XEN_DOMINF_dying)
@@ -103,6 +104,7 @@
uint32_t max_vcpu_id; /* Maximum VCPUID in use by this domain. */
uint32_t ssidref;
xen_domain_handle_t handle;
+ xen_domain_group_handle_t dg_handle;
};
typedef struct xen_domctl_getdomaininfo xen_domctl_getdomaininfo_t;
DEFINE_XEN_GUEST_HANDLE(xen_domctl_getdomaininfo_t);
diff -urN xen-unstable/xen/include/public/domgrpctl.h
xen-unstable-trp-domgrps-rebase-tip/xen/include/public/domgrpctl.h
--- xen-unstable/xen/include/public/domgrpctl.h 1969-12-31 19:00:00.000000000
-0500
+++ xen-unstable-trp-domgrps-rebase-tip/xen/include/public/domgrpctl.h
2007-11-19 18:42:00.000000000 -0500
@@ -0,0 +1,86 @@
+/******************************************************************************
+ * domgrpctl.h
+ *
+ * Domain group management operations. For use by node control stack.
+ *
+ * Author: Chris Bookholt (hap10@xxxxxxxxxxxxxx)
+ */
+
+#ifndef __XEN_PUBLIC_DOMGRPCTL_H__
+#define __XEN_PUBLIC_DOMGRPCTL_H__
+
+#if !defined(__XEN__) && !defined(__XEN_TOOLS__)
+#error "domgrpctl operations are intended for use by node control tools only"
+#endif
+
+#include "xen.h"
+
+#define XEN_DOMGRPCTL_INTERFACE_VERSION 0x00000001
+
+#define MAX_GROUP_SIZE 24
+#define NULL_GROUP_ID (0x7FFFU)
+#define INVAL_GROUP_ID (0xFFFFU)
+
+#define XEN_DOMGRPCTL_creategrp 1
+struct xen_domgrpctl_creategrp {
+ dgid_t dgid;
+ xen_domain_group_handle_t handle;
+};
+typedef struct xen_domgrpctl_creategrp xen_domgrpctl_creategrp_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domgrpctl_creategrp_t);
+
+#define XEN_DOMGRPCTL_joingrp 2
+struct xen_domgrpctl_joingrp {
+ domid_t domid;
+ dgid_t dgid;
+};
+typedef struct xen_domgrpctl_joingrp xen_domgrpctl_joingrp_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domgrpctl_joingrp_t);
+
+#define XEN_DOMGRPCTL_pausegrp 3
+struct xen_domgrpctl_pausegrp {
+ dgid_t dgid;
+};
+typedef struct xen_domgrpctl_pausegrp xen_domgrpctl_pausegrp_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domgrpctl_pausegrp_t);
+
+#define XEN_DOMGRPCTL_unpausegrp 4
+struct xen_domgrpctl_unpausegrp {
+ dgid_t dgid;
+};
+typedef struct xen_domgrpctl_unpausegrp xen_domgrpctl_unpausegrp_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domgrpctl_unpausegrp_t);
+
+#define XEN_DOMGRPCTL_destroygrp 5
+struct xen_domgrpctl_destroygrp {
+ dgid_t dgid;
+};
+typedef struct xen_domgrpctl_destroygrp xen_domgrpctl_destroygrp_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domgrpctl_destroygrp_t);
+
+#define XEN_DOMGRPCTL_getgrpinfo 6
+struct xen_domgrpctl_getgrpinfo {
+ dgid_t dgid;
+ uint16_t size;
+ domid_t member_list[MAX_GROUP_SIZE];
+ xen_domain_group_handle_t handle;
+};
+typedef struct xen_domgrpctl_getgrpinfo xen_domgrpctl_getgrpinfo_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domgrpctl_getgrpinfo_t);
+
+struct xen_domgrpctl {
+ uint32_t cmd;
+ uint32_t interface_version;
+ union {
+ struct xen_domgrpctl_creategrp create_grp;
+ struct xen_domgrpctl_joingrp join_grp;
+ struct xen_domgrpctl_pausegrp pause_grp;
+ struct xen_domgrpctl_unpausegrp unpause_grp;
+ struct xen_domgrpctl_destroygrp destroy_grp;
+ struct xen_domgrpctl_getgrpinfo get_grp_info;
+ } u;
+};
+typedef struct xen_domgrpctl xen_domgrpctl_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domgrpctl_t);
+
+#endif /* __XEN_PUBLIC_DOMGRPCTL_H__ */
diff -urN xen-unstable/xen/include/public/xen.h
xen-unstable-trp-domgrps-rebase-tip/xen/include/public/xen.h
--- xen-unstable/xen/include/public/xen.h 2007-10-22 15:12:58.000000000
-0400
+++ xen-unstable-trp-domgrps-rebase-tip/xen/include/public/xen.h
2007-11-19 18:42:00.000000000 -0500
@@ -80,6 +80,7 @@
#define __HYPERVISOR_sysctl 35
#define __HYPERVISOR_domctl 36
#define __HYPERVISOR_kexec_op 37
+#define __HYPERVISOR_domgrpctl 38
/* Architecture-specific hypercall definitions. */
#define __HYPERVISOR_arch_0 48
@@ -297,6 +298,8 @@
typedef uint16_t domid_t;
+typedef uint16_t dgid_t;
+
/* Domain ids >= DOMID_FIRST_RESERVED cannot be used for ordinary domains. */
#define DOMID_FIRST_RESERVED (0x7FF0U)
@@ -520,7 +523,9 @@
unsigned long nr_pt_frames; /* Number of bootstrap p.t. frames. */
unsigned long mfn_list; /* VIRTUAL address of page-frame list. */
unsigned long mod_start; /* VIRTUAL address of pre-loaded module. */
+ /* or VIRTUAL address of module_t array */
unsigned long mod_len; /* Size (bytes) of pre-loaded module. */
+ /* or length of module_t array. */
int8_t cmd_line[MAX_GUEST_CMDLINE];
};
typedef struct start_info start_info_t;
@@ -579,6 +584,8 @@
typedef uint8_t xen_domain_handle_t[16];
+typedef uint8_t xen_domain_group_handle_t[16];
+
/* Turn a plain number into a C unsigned long constant. */
#define __mk_unsigned_long(x) x ## UL
#define mk_unsigned_long(x) __mk_unsigned_long(x)
diff -urN xen-unstable/xen/include/xen/domgrp.h
xen-unstable-trp-domgrps-rebase-tip/xen/include/xen/domgrp.h
--- xen-unstable/xen/include/xen/domgrp.h 1969-12-31 19:00:00.000000000
-0500
+++ xen-unstable-trp-domgrps-rebase-tip/xen/include/xen/domgrp.h
2007-11-19 18:42:00.000000000 -0500
@@ -0,0 +1,36 @@
+/******************************************************************************
+ * domgrp.h
+ *
+ * Generic domain group-handling functions.
+ *
+ * Author: Chris Bookholt (hap10@xxxxxxxxxxxxxx)
+ */
+
+#ifndef __XEN_DOM_GROUP_H__
+#define __XEN_DOM_GROUP_H__
+
+#include <public/domgrpctl.h>
+
+extern struct list_head domgrplist;
+
+void get_grp_info(struct domain_group *grp, xen_domgrpctl_getgrpinfo_t * info);
+
+struct domain_group *find_grp_by_id(dgid_t dgid);
+
+uint16_t get_new_group_id(void);
+
+struct domain_group *domain_group_create(dgid_t dgid);
+
+int del_dom_from_grp(struct domain *old_dom);
+
+int add_dom_to_grp(struct domain *dom, dgid_t dgid);
+
+int pause_grp(dgid_t dgid);
+
+int unpause_grp(dgid_t dgid);
+
+int domain_group_destroy(dgid_t dgid);
+
+int init_domain_groups(void);
+
+#endif /* __XEN_DOM_GROUP_H__ */
diff -urN xen-unstable/xen/include/xen/hypercall.h
xen-unstable-trp-domgrps-rebase-tip/xen/include/xen/hypercall.h
--- xen-unstable/xen/include/xen/hypercall.h 2007-09-13 14:40:12.000000000
-0400
+++ xen-unstable-trp-domgrps-rebase-tip/xen/include/xen/hypercall.h
2007-11-19 18:42:00.000000000 -0500
@@ -10,6 +10,7 @@
#include <xen/time.h>
#include <public/xen.h>
#include <public/domctl.h>
+#include <public/domgrpctl.h>
#include <public/sysctl.h>
#include <public/platform.h>
#include <public/event_channel.h>
@@ -35,6 +36,10 @@
XEN_GUEST_HANDLE(xen_domctl_t) u_domctl);
extern long
+do_domgrpctl(
+ XEN_GUEST_HANDLE(xen_domgrpctl_t) u_domgrpctl);
+
+extern long
do_sysctl(
XEN_GUEST_HANDLE(xen_sysctl_t) u_sysctl);
diff -urN xen-unstable/xen/include/xen/sched.h
xen-unstable-trp-domgrps-rebase-tip/xen/include/xen/sched.h
--- xen-unstable/xen/include/xen/sched.h 2007-11-19 10:38:08.000000000
-0500
+++ xen-unstable-trp-domgrps-rebase-tip/xen/include/xen/sched.h 2007-11-19
18:47:23.000000000 -0500
@@ -9,6 +9,7 @@
#include <xen/shared.h>
#include <public/xen.h>
#include <public/domctl.h>
+#include <public/domgrpctl.h>
#include <public/vcpu.h>
#include <public/xsm/acm.h>
#include <xen/time.h>
@@ -19,6 +20,7 @@
#include <xen/xenoprof.h>
#include <xen/rcupdate.h>
#include <xen/irq.h>
+#include <xen/init.h>
#ifdef CONFIG_COMPAT
#include <compat/vcpu.h>
@@ -27,6 +29,9 @@
extern unsigned long volatile jiffies;
+extern spinlock_t domgrplist_update_lock;
+extern rcu_read_lock_t domgrplist_read_lock;
+
/* A global pointer to the initial domain (DOM0). */
extern struct domain *dom0;
@@ -145,9 +150,13 @@
{
domid_t domain_id;
+ dgid_t group_id; /* TODO: replace struct group ptr */
+ struct list_head member;
+
shared_info_t *shared_info; /* shared data area */
spinlock_t big_lock;
+ spinlock_t *grp_big_lock;
spinlock_t page_alloc_lock; /* protects all the following fields */
struct list_head page_list; /* linked list, of size tot_pages */
@@ -233,6 +242,23 @@
spinlock_t hypercall_deadlock_mutex;
};
+struct domain_group
+{
+ dgid_t group_id;
+ uint16_t size;
+
+ struct list_head groups;
+
+ struct list_head member_list;
+
+ spinlock_t grp_big_lock;
+
+ spinlock_t member_list_update_lock;
+ rcu_read_lock_t member_list_read_lock;
+
+ xen_domain_group_handle_t handle;
+};
+
struct domain_setup_info
{
/* Initialised by caller. */
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