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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] Memory paging domctl support, which is a sub-operation of the generic memory
# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1261031275 0
# Node ID 9e67c0a752006cd169a67f9c7f5fdc3eac5194f4
# Parent 33d97bf8a376046feb5941698be997a958b64f79
Memory paging domctl support, which is a sub-operation of the generic memory
event domctl support.
Signed-off-by: Patrick Colp <Patrick.Colp@xxxxxxxxxx>
---
xen/arch/x86/mm/Makefile | 1
xen/arch/x86/mm/mem_event.c | 6 ++
xen/arch/x86/mm/mem_paging.c | 79 +++++++++++++++++++++++++++++++++++++++
xen/include/asm-x86/mem_paging.h | 35 +++++++++++++++++
xen/include/public/domctl.h | 12 +++++
5 files changed, 133 insertions(+)
diff -r 33d97bf8a376 -r 9e67c0a75200 xen/arch/x86/mm/Makefile
--- a/xen/arch/x86/mm/Makefile Thu Dec 17 06:27:55 2009 +0000
+++ b/xen/arch/x86/mm/Makefile Thu Dec 17 06:27:55 2009 +0000
@@ -7,6 +7,7 @@ obj-y += guest_walk_3.o
obj-y += guest_walk_3.o
obj-$(x86_64) += guest_walk_4.o
obj-y += mem_event.o
+obj-y += mem_paging.o
guest_walk_%.o: guest_walk.c Makefile
$(CC) $(CFLAGS) -DGUEST_PAGING_LEVELS=$* -c $< -o $@
diff -r 33d97bf8a376 -r 9e67c0a75200 xen/arch/x86/mm/mem_event.c
--- a/xen/arch/x86/mm/mem_event.c Thu Dec 17 06:27:55 2009 +0000
+++ b/xen/arch/x86/mm/mem_event.c Thu Dec 17 06:27:55 2009 +0000
@@ -24,6 +24,7 @@
#include <xen/event.h>
#include <asm/p2m.h>
#include <asm/mem_event.h>
+#include <asm/mem_paging.h>
#define xen_mb() mb()
@@ -274,7 +275,12 @@ int mem_event_domctl(struct domain *d, x
}
}
else
+ {
rc = -ENOSYS;
+
+ if ( mec->mode & XEN_DOMCTL_MEM_EVENT_OP_PAGING )
+ rc = mem_paging_domctl(d, mec, u_domctl);
+ }
return rc;
}
diff -r 33d97bf8a376 -r 9e67c0a75200 xen/arch/x86/mm/mem_paging.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/arch/x86/mm/mem_paging.c Thu Dec 17 06:27:55 2009 +0000
@@ -0,0 +1,79 @@
+/******************************************************************************
+ * arch/x86/mm/mem_paging.c
+ *
+ * Memory paging support.
+ *
+ * Copyright (c) 2009 Citrix (R)&D) Ltd. (Patrick Colp)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+#include <asm/p2m.h>
+#include <asm/mem_event.h>
+
+
+int mem_paging_domctl(struct domain *d, xen_domctl_mem_event_op_t *mec,
+ XEN_GUEST_HANDLE(void) u_domctl)
+{
+ int rc;
+
+ switch( mec->op )
+ {
+ case XEN_DOMCTL_MEM_EVENT_OP_PAGING_NOMINATE:
+ {
+ unsigned long gfn = mec->gfn;
+ rc = p2m_mem_paging_nominate(d, gfn);
+ }
+ break;
+
+ case XEN_DOMCTL_MEM_EVENT_OP_PAGING_EVICT:
+ {
+ unsigned long gfn = mec->gfn;
+ rc = p2m_mem_paging_evict(d, gfn);
+ }
+ break;
+
+ case XEN_DOMCTL_MEM_EVENT_OP_PAGING_PREP:
+ {
+ unsigned long gfn = mec->gfn;
+ rc = p2m_mem_paging_prep(d, gfn);
+ }
+ break;
+
+ case XEN_DOMCTL_MEM_EVENT_OP_PAGING_RESUME:
+ {
+ p2m_mem_paging_resume(d);
+ rc = 0;
+ }
+ break;
+
+ default:
+ rc = -ENOSYS;
+ break;
+ }
+
+ return rc;
+}
+
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff -r 33d97bf8a376 -r 9e67c0a75200 xen/include/asm-x86/mem_paging.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/include/asm-x86/mem_paging.h Thu Dec 17 06:27:55 2009 +0000
@@ -0,0 +1,35 @@
+/******************************************************************************
+ * include/asm-x86/mem_paging.h
+ *
+ * Memory paging support.
+ *
+ * Copyright (c) 2009 Citrix (R)&D) Ltd. (Patrick Colp)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+int mem_paging_domctl(struct domain *d, xen_domctl_mem_event_op_t *mec,
+ XEN_GUEST_HANDLE(void) u_domctl);
+
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff -r 33d97bf8a376 -r 9e67c0a75200 xen/include/public/domctl.h
--- a/xen/include/public/domctl.h Thu Dec 17 06:27:55 2009 +0000
+++ b/xen/include/public/domctl.h Thu Dec 17 06:27:55 2009 +0000
@@ -140,6 +140,7 @@ DEFINE_XEN_GUEST_HANDLE(xen_domctl_getme
#define XEN_DOMCTL_PFINFO_LTABTYPE_MASK (0x7U<<28)
#define XEN_DOMCTL_PFINFO_LPINTAB (0x1U<<31)
#define XEN_DOMCTL_PFINFO_XTAB (0xfU<<28) /* invalid page */
+#define XEN_DOMCTL_PFINFO_PAGEDTAB (0x8U<<28)
#define XEN_DOMCTL_PFINFO_LTAB_MASK (0xfU<<28)
struct xen_domctl_getpageframeinfo {
@@ -700,6 +701,17 @@ struct xen_domctl_gdbsx_domstatus {
/* Add and remove memory handlers */
#define XEN_DOMCTL_MEM_EVENT_OP_ENABLE 0
#define XEN_DOMCTL_MEM_EVENT_OP_DISABLE 1
+
+/*
+ * Page memory in and out.
+ */
+#define XEN_DOMCTL_MEM_EVENT_OP_PAGING (1 << 0)
+
+/* Domain memory paging */
+#define XEN_DOMCTL_MEM_EVENT_OP_PAGING_NOMINATE 0
+#define XEN_DOMCTL_MEM_EVENT_OP_PAGING_EVICT 1
+#define XEN_DOMCTL_MEM_EVENT_OP_PAGING_PREP 2
+#define XEN_DOMCTL_MEM_EVENT_OP_PAGING_RESUME 3
struct xen_domctl_mem_event_op {
uint32_t op; /* XEN_DOMCTL_MEM_EVENT_OP_* */
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