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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] Enable compatibility mode operation for kexec.
# HG changeset patch
# User Emmanuel Ackaouy <ack@xxxxxxxxxxxxx>
# Date 1168018481 0
# Node ID b8eeb4537e095e3f7cb556947427054e934d7b29
# Parent 762cb69ce3be132461498271f720812fe00ac463
Enable compatibility mode operation for kexec.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
---
xen/arch/x86/x86_64/compat/entry.S | 2 +
xen/common/Makefile | 1
xen/common/compat/kexec.c | 33 +++++++++++++++++++++++++++++
xen/common/kexec.c | 42 +++++++++++++++++++++++++++++--------
xen/include/xlat.lst | 2 +
5 files changed, 71 insertions(+), 9 deletions(-)
diff -r 762cb69ce3be -r b8eeb4537e09 xen/arch/x86/x86_64/compat/entry.S
--- a/xen/arch/x86/x86_64/compat/entry.S Fri Jan 05 17:34:40 2007 +0000
+++ b/xen/arch/x86/x86_64/compat/entry.S Fri Jan 05 17:34:41 2007 +0000
@@ -316,6 +316,7 @@ ENTRY(compat_hypercall_table)
.quad compat_ni_hypercall
.quad compat_sysctl /* 35 */
.quad compat_domctl
+ .quad compat_kexec_op
.rept NR_hypercalls-((.-compat_hypercall_table)/8)
.quad compat_ni_hypercall
.endr
@@ -358,6 +359,7 @@ ENTRY(compat_hypercall_args_table)
.byte 0 /* compat_ni_hypercall */
.byte 1 /* compat_sysctl */ /* 35 */
.byte 1 /* compat_domctl */
+ .byte 2 /* compat_kexec_op */
.rept NR_hypercalls-(.-compat_hypercall_args_table)
.byte 0 /* compat_ni_hypercall */
.endr
diff -r 762cb69ce3be -r b8eeb4537e09 xen/common/Makefile
--- a/xen/common/Makefile Fri Jan 05 17:34:40 2007 +0000
+++ b/xen/common/Makefile Fri Jan 05 17:34:41 2007 +0000
@@ -44,6 +44,7 @@ ifeq ($(CONFIG_COMPAT),y)
# extra dependencies
acm_ops.o: compat/acm_ops.c
grant_table.o: compat/grant_table.c
+kexec.o: compat/kexec.c
schedule.o: compat/schedule.c
xenoprof.o: compat/xenoprof.c
endif
diff -r 762cb69ce3be -r b8eeb4537e09 xen/common/compat/kexec.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/common/compat/kexec.c Fri Jan 05 17:34:41 2007 +0000
@@ -0,0 +1,33 @@
+/*
+ * compat/kexec.c
+ */
+
+#include <compat/kexec.h>
+
+#define COMPAT
+#define ret_t int
+
+#define do_kexec_op compat_kexec_op
+
+#undef kexec_get
+#define kexec_get(x) compat_kexec_get_##x
+#define xen_kexec_range compat_kexec_range
+#define xen_kexec_range_t compat_kexec_range_t
+
+#define kexec_load_unload compat_kexec_load_unload
+#define xen_kexec_load compat_kexec_load
+#define xen_kexec_load_t compat_kexec_load_t
+
+CHECK_kexec_exec;
+
+#include "../kexec.c"
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff -r 762cb69ce3be -r b8eeb4537e09 xen/common/kexec.c
--- a/xen/common/kexec.c Fri Jan 05 17:34:40 2007 +0000
+++ b/xen/common/kexec.c Fri Jan 05 17:34:41 2007 +0000
@@ -22,6 +22,10 @@
#include <xen/version.h>
#include <public/elfnote.h>
+#ifndef COMPAT
+
+typedef long ret_t;
+
DEFINE_PER_CPU (crash_note_t, crash_notes);
cpumask_t crash_saved_cpus;
@@ -143,21 +147,25 @@ static __init int register_crashdump_tri
}
__initcall(register_crashdump_trigger);
-static int kexec_get_reserve(xen_kexec_range_t *range)
+#define kexec_get(x) kexec_get_##x
+
+#endif
+
+static int kexec_get(reserve)(xen_kexec_range_t *range)
{
range->start = kexec_crash_area.start;
range->size = kexec_crash_area.size;
return 0;
}
-static int kexec_get_xen(xen_kexec_range_t *range)
+static int kexec_get(xen)(xen_kexec_range_t *range)
{
range->start = virt_to_maddr(_start);
range->size = (unsigned long)_end - (unsigned long)_start;
return 0;
}
-static int kexec_get_cpu(xen_kexec_range_t *range)
+static int kexec_get(cpu)(xen_kexec_range_t *range)
{
if ( range->nr < 0 || range->nr >= num_present_cpus() )
return -EINVAL;
@@ -167,7 +175,7 @@ static int kexec_get_cpu(xen_kexec_range
return 0;
}
-static int kexec_get_range(XEN_GUEST_HANDLE(void) uarg)
+static int kexec_get(range)(XEN_GUEST_HANDLE(void) uarg)
{
xen_kexec_range_t range;
int ret = -EINVAL;
@@ -178,13 +186,13 @@ static int kexec_get_range(XEN_GUEST_HAN
switch ( range.range )
{
case KEXEC_RANGE_MA_CRASH:
- ret = kexec_get_reserve(&range);
+ ret = kexec_get(reserve)(&range);
break;
case KEXEC_RANGE_MA_XEN:
- ret = kexec_get_xen(&range);
+ ret = kexec_get(xen)(&range);
break;
case KEXEC_RANGE_MA_CPU:
- ret = kexec_get_cpu(&range);
+ ret = kexec_get(cpu)(&range);
break;
}
@@ -193,6 +201,8 @@ static int kexec_get_range(XEN_GUEST_HAN
return ret;
}
+
+#ifndef COMPAT
static int kexec_load_get_bits(int type, int *base, int *bit)
{
@@ -211,6 +221,8 @@ static int kexec_load_get_bits(int type,
}
return 0;
}
+
+#endif
static int kexec_load_unload(unsigned long op, XEN_GUEST_HANDLE(void) uarg)
{
@@ -234,7 +246,11 @@ static int kexec_load_unload(unsigned lo
BUG_ON(test_bit((base + !pos), &kexec_flags)); /* must be free */
+#ifndef COMPAT
memcpy(image, &load.image, sizeof(*image));
+#else
+ XLAT_kexec_image(image, &load.image);
+#endif
if ( !(ret = machine_kexec_load(load.type, base + !pos, image)) )
{
@@ -259,6 +275,8 @@ static int kexec_load_unload(unsigned lo
return ret;
}
+#ifndef COMPAT
+
static int kexec_exec(XEN_GUEST_HANDLE(void) uarg)
{
xen_kexec_exec_t exec;
@@ -292,7 +310,9 @@ static int kexec_exec(XEN_GUEST_HANDLE(v
return -EINVAL; /* never reached */
}
-long do_kexec_op(unsigned long op, XEN_GUEST_HANDLE(void) uarg)
+#endif
+
+ret_t do_kexec_op(unsigned long op, XEN_GUEST_HANDLE(void) uarg)
{
unsigned long flags;
int ret = -EINVAL;
@@ -303,7 +323,7 @@ long do_kexec_op(unsigned long op, XEN_G
switch ( op )
{
case KEXEC_CMD_kexec_get_range:
- ret = kexec_get_range(uarg);
+ ret = kexec_get(range)(uarg);
break;
case KEXEC_CMD_kexec_load:
case KEXEC_CMD_kexec_unload:
@@ -321,6 +341,10 @@ long do_kexec_op(unsigned long op, XEN_G
return ret;
}
+
+#if defined(CONFIG_COMPAT) && !defined(COMPAT)
+#include "compat/kexec.c"
+#endif
/*
* Local variables:
diff -r 762cb69ce3be -r b8eeb4537e09 xen/include/xlat.lst
--- a/xen/include/xlat.lst Fri Jan 05 17:34:40 2007 +0000
+++ b/xen/include/xlat.lst Fri Jan 05 17:34:41 2007 +0000
@@ -32,6 +32,8 @@
! gnttab_transfer grant_table.h
? gnttab_unmap_grant_ref grant_table.h
? grant_entry grant_table.h
+? kexec_exec kexec.h
+! kexec_image kexec.h
! add_to_physmap memory.h
! foreign_memory_map memory.h
! memory_exchange memory.h
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