leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ia64/pv_ops/xen: define xen specific gate page.

Browse Source 
define xen specific gate page.
At this phase bits in the gate page is same to native.
At the next phase, it will be paravirtualized.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Isaku Yamahata 2009-03-04 21:05:43 +09:00 committed by Tony Luck
parent e4ff5b8f54
commit b937dd76d0
5 changed files with 94 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
arch/ia64/include/asm/xen/patchlist.h Normal file
View File

@ -0,0 +1,38 @@
/******************************************************************************
* arch/ia64/include/asm/xen/patchlist.h
*
* Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
*
* 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
*
*/
#define __paravirt_start_gate_fsyscall_patchlist \
__xen_start_gate_fsyscall_patchlist
#define __paravirt_end_gate_fsyscall_patchlist \
__xen_end_gate_fsyscall_patchlist
#define __paravirt_start_gate_brl_fsys_bubble_down_patchlist \
__xen_start_gate_brl_fsys_bubble_down_patchlist
#define __paravirt_end_gate_brl_fsys_bubble_down_patchlist \
__xen_end_gate_brl_fsys_bubble_down_patchlist
#define __paravirt_start_gate_vtop_patchlist \
__xen_start_gate_vtop_patchlist
#define __paravirt_end_gate_vtop_patchlist \
__xen_end_gate_vtop_patchlist
#define __paravirt_start_gate_mckinley_e9_patchlist \
__xen_start_gate_mckinley_e9_patchlist
#define __paravirt_end_gate_mckinley_e9_patchlist \
__xen_end_gate_mckinley_e9_patchlist

6
arch/ia64/kernel/vmlinux.lds.S
View File

@ -201,6 +201,12 @@ SECTIONS
__start_gate_section = .;
*(.data.gate)
__stop_gate_section = .;
#ifdef CONFIG_XEN
. = ALIGN(PAGE_SIZE);
__xen_start_gate_section = .;
*(.data.gate.xen)
__xen_stop_gate_section = .;
#endif
}
. = ALIGN(PAGE_SIZE); /* make sure the gate page doesn't expose
* kernel data

16
arch/ia64/xen/Makefile
View File

@ -3,10 +3,24 @@
#
obj-y := hypercall.o xenivt.o xensetup.o xen_pv_ops.o irq_xen.o \
hypervisor.o xencomm.o xcom_hcall.o grant-table.o time.o suspend.o
hypervisor.o xencomm.o xcom_hcall.o grant-table.o time.o suspend.o \
gate-data.o
obj-$(CONFIG_IA64_GENERIC) += machvec.o
# The gate DSO image is built using a special linker script.
include $(srctree)/arch/ia64/kernel/Makefile.gate
# tell compiled for xen
CPPFLAGS_gate.lds += -D__IA64_GATE_PARAVIRTUALIZED_XEN
# use same file of native.
$(obj)/gate.o: $(src)/../kernel/gate.S FORCE
$(call if_changed_dep,as_o_S)
$(obj)/gate.lds: $(src)/../kernel/gate.lds.S FORCE
$(call if_changed_dep,cpp_lds_S)
AFLAGS_xenivt.o += -D__IA64_ASM_PARAVIRTUALIZED_XEN
# xen multi compile

3
arch/ia64/xen/gate-data.S Normal file
View File

@ -0,0 +1,3 @@
.section .data.gate.xen, "aw"
.incbin "arch/ia64/xen/gate.so"

32
arch/ia64/xen/xen_pv_ops.c
View File

@ -178,6 +178,37 @@ struct pv_fsys_data xen_fsys_data __initdata = {
.fsys_bubble_down = (void *)xen_fsys_bubble_down,
};
/***************************************************************************
* pv_patchdata
* patchdata addresses
*/
#define DECLARE(name) \
extern unsigned long __xen_start_gate_##name##_patchlist[]; \
extern unsigned long __xen_end_gate_##name##_patchlist[]
DECLARE(fsyscall);
DECLARE(brl_fsys_bubble_down);
DECLARE(vtop);
DECLARE(mckinley_e9);
extern unsigned long __xen_start_gate_section[];
#define ASSIGN(name) \
.start_##name##_patchlist = \
(unsigned long)__xen_start_gate_##name##_patchlist, \
.end_##name##_patchlist = \
(unsigned long)__xen_end_gate_##name##_patchlist
static struct pv_patchdata xen_patchdata __initdata = {
ASSIGN(fsyscall),
ASSIGN(brl_fsys_bubble_down),
ASSIGN(vtop),
ASSIGN(mckinley_e9),
.gate_section = (void*)__xen_start_gate_section,
};
/***************************************************************************
* pv_cpu_ops
* intrinsics hooks.
@ -447,6 +478,7 @@ xen_setup_pv_ops(void)
pv_info = xen_info;
pv_init_ops = xen_init_ops;
pv_fsys_data = xen_fsys_data;
pv_patchdata = xen_patchdata;
pv_cpu_ops = xen_cpu_ops;
pv_iosapic_ops = xen_iosapic_ops;
pv_irq_ops = xen_irq_ops;