ia64/pv_ops: gate page paravirtualization.
paravirtualize gate page by allowing each pv_ops instances to define its own gate page. 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
Tony Luck
parent
1aec1c558a
commit
e4ff5b8f54
|
|
@ -0,0 +1,38 @@
|
|||
/******************************************************************************
|
||||
* arch/ia64/include/asm/native/inst.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 \
|
||||
__ia64_native_start_gate_fsyscall_patchlist
|
||||
#define __paravirt_end_gate_fsyscall_patchlist \
|
||||
__ia64_native_end_gate_fsyscall_patchlist
|
||||
#define __paravirt_start_gate_brl_fsys_bubble_down_patchlist \
|
||||
__ia64_native_start_gate_brl_fsys_bubble_down_patchlist
|
||||
#define __paravirt_end_gate_brl_fsys_bubble_down_patchlist \
|
||||
__ia64_native_end_gate_brl_fsys_bubble_down_patchlist
|
||||
#define __paravirt_start_gate_vtop_patchlist \
|
||||
__ia64_native_start_gate_vtop_patchlist
|
||||
#define __paravirt_end_gate_vtop_patchlist \
|
||||
__ia64_native_end_gate_vtop_patchlist
|
||||
#define __paravirt_start_gate_mckinley_e9_patchlist \
|
||||
__ia64_native_start_gate_mckinley_e9_patchlist
|
||||
#define __paravirt_end_gate_mckinley_e9_patchlist \
|
||||
__ia64_native_end_gate_mckinley_e9_patchlist
|
||||
|
|
@ -35,6 +35,41 @@ extern struct pv_fsys_data pv_fsys_data;
|
|||
|
||||
unsigned long *paravirt_get_fsyscall_table(void);
|
||||
char *paravirt_get_fsys_bubble_down(void);
|
||||
|
||||
/******************************************************************************
|
||||
* patchlist addresses for gate page
|
||||
*/
|
||||
enum pv_gate_patchlist {
|
||||
PV_GATE_START_FSYSCALL,
|
||||
PV_GATE_END_FSYSCALL,
|
||||
|
||||
PV_GATE_START_BRL_FSYS_BUBBLE_DOWN,
|
||||
PV_GATE_END_BRL_FSYS_BUBBLE_DOWN,
|
||||
|
||||
PV_GATE_START_VTOP,
|
||||
PV_GATE_END_VTOP,
|
||||
|
||||
PV_GATE_START_MCKINLEY_E9,
|
||||
PV_GATE_END_MCKINLEY_E9,
|
||||
};
|
||||
|
||||
struct pv_patchdata {
|
||||
unsigned long start_fsyscall_patchlist;
|
||||
unsigned long end_fsyscall_patchlist;
|
||||
unsigned long start_brl_fsys_bubble_down_patchlist;
|
||||
unsigned long end_brl_fsys_bubble_down_patchlist;
|
||||
unsigned long start_vtop_patchlist;
|
||||
unsigned long end_vtop_patchlist;
|
||||
unsigned long start_mckinley_e9_patchlist;
|
||||
unsigned long end_mckinley_e9_patchlist;
|
||||
|
||||
void *gate_section;
|
||||
};
|
||||
|
||||
extern struct pv_patchdata pv_patchdata;
|
||||
|
||||
unsigned long paravirt_get_gate_patchlist(enum pv_gate_patchlist type);
|
||||
void *paravirt_get_gate_section(void);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_PARAVIRT_GUEST
|
||||
|
|
|
|||
|
|
@ -5,7 +5,7 @@
|
|||
extra-y := head.o init_task.o vmlinux.lds
|
||||
|
||||
obj-y := acpi.o entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64.o \
|
||||
irq_lsapic.o ivt.o machvec.o pal.o patch.o process.o perfmon.o ptrace.o sal.o \
|
||||
irq_lsapic.o ivt.o machvec.o pal.o paravirt_patchlist.o patch.o process.o perfmon.o ptrace.o sal.o \
|
||||
salinfo.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
|
||||
unwind.o mca.o mca_asm.o topology.o
|
||||
|
||||
|
|
@ -47,35 +47,13 @@ ifeq ($(CONFIG_DMAR), y)
|
|||
obj-$(CONFIG_SWIOTLB) += pci-swiotlb.o
|
||||
endif
|
||||
|
||||
# The gate DSO image is built using a special linker script.
|
||||
targets += gate.so gate-syms.o
|
||||
|
||||
extra-y += gate.so gate-syms.o gate.lds gate.o
|
||||
|
||||
# fp_emulate() expects f2-f5,f16-f31 to contain the user-level state.
|
||||
CFLAGS_traps.o += -mfixed-range=f2-f5,f16-f31
|
||||
|
||||
CPPFLAGS_gate.lds := -P -C -U$(ARCH)
|
||||
|
||||
quiet_cmd_gate = GATE $@
|
||||
cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@
|
||||
|
||||
GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 \
|
||||
$(call ld-option, -Wl$(comma)--hash-style=sysv)
|
||||
$(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE
|
||||
$(call if_changed,gate)
|
||||
|
||||
$(obj)/built-in.o: $(obj)/gate-syms.o
|
||||
$(obj)/built-in.o: ld_flags += -R $(obj)/gate-syms.o
|
||||
|
||||
GATECFLAGS_gate-syms.o = -r
|
||||
$(obj)/gate-syms.o: $(obj)/gate.lds $(obj)/gate.o FORCE
|
||||
$(call if_changed,gate)
|
||||
|
||||
# gate-data.o contains the gate DSO image as data in section .data.gate.
|
||||
# We must build gate.so before we can assemble it.
|
||||
# Note: kbuild does not track this dependency due to usage of .incbin
|
||||
$(obj)/gate-data.o: $(obj)/gate.so
|
||||
# The gate DSO image is built using a special linker script.
|
||||
include $(srctree)/arch/ia64/kernel/Makefile.gate
|
||||
# tell compiled for native
|
||||
CPPFLAGS_gate.lds += -D__IA64_GATE_PARAVIRTUALIZED_NATIVE
|
||||
|
||||
# Calculate NR_IRQ = max(IA64_NATIVE_NR_IRQS, XEN_NR_IRQS, ...) based on config
|
||||
define sed-y
|
||||
|
|
|
|||
|
|
@ -0,0 +1,27 @@
|
|||
# The gate DSO image is built using a special linker script.
|
||||
|
||||
targets += gate.so gate-syms.o
|
||||
|
||||
extra-y += gate.so gate-syms.o gate.lds gate.o
|
||||
|
||||
CPPFLAGS_gate.lds := -P -C -U$(ARCH)
|
||||
|
||||
quiet_cmd_gate = GATE $@
|
||||
cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@
|
||||
|
||||
GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 \
|
||||
$(call ld-option, -Wl$(comma)--hash-style=sysv)
|
||||
$(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE
|
||||
$(call if_changed,gate)
|
||||
|
||||
$(obj)/built-in.o: $(obj)/gate-syms.o
|
||||
$(obj)/built-in.o: ld_flags += -R $(obj)/gate-syms.o
|
||||
|
||||
GATECFLAGS_gate-syms.o = -r
|
||||
$(obj)/gate-syms.o: $(obj)/gate.lds $(obj)/gate.o FORCE
|
||||
$(call if_changed,gate)
|
||||
|
||||
# gate-data.o contains the gate DSO image as data in section .data.gate.
|
||||
# We must build gate.so before we can assemble it.
|
||||
# Note: kbuild does not track this dependency due to usage of .incbin
|
||||
$(obj)/gate-data.o: $(obj)/gate.so
|
||||
|
|
@ -7,6 +7,7 @@
|
|||
|
||||
|
||||
#include <asm/system.h>
|
||||
#include "paravirt_patchlist.h"
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
|
|
@ -33,21 +34,21 @@ SECTIONS
|
|||
. = GATE_ADDR + 0x600;
|
||||
|
||||
.data.patch : {
|
||||
__start_gate_mckinley_e9_patchlist = .;
|
||||
__paravirt_start_gate_mckinley_e9_patchlist = .;
|
||||
*(.data.patch.mckinley_e9)
|
||||
__end_gate_mckinley_e9_patchlist = .;
|
||||
__paravirt_end_gate_mckinley_e9_patchlist = .;
|
||||
|
||||
__start_gate_vtop_patchlist = .;
|
||||
__paravirt_start_gate_vtop_patchlist = .;
|
||||
*(.data.patch.vtop)
|
||||
__end_gate_vtop_patchlist = .;
|
||||
__paravirt_end_gate_vtop_patchlist = .;
|
||||
|
||||
__start_gate_fsyscall_patchlist = .;
|
||||
__paravirt_start_gate_fsyscall_patchlist = .;
|
||||
*(.data.patch.fsyscall_table)
|
||||
__end_gate_fsyscall_patchlist = .;
|
||||
__paravirt_end_gate_fsyscall_patchlist = .;
|
||||
|
||||
__start_gate_brl_fsys_bubble_down_patchlist = .;
|
||||
__paravirt_start_gate_brl_fsys_bubble_down_patchlist = .;
|
||||
*(.data.patch.brl_fsys_bubble_down)
|
||||
__end_gate_brl_fsys_bubble_down_patchlist = .;
|
||||
__paravirt_end_gate_brl_fsys_bubble_down_patchlist = .;
|
||||
} :readable
|
||||
|
||||
.IA_64.unwind_info : { *(.IA_64.unwind_info*) }
|
||||
|
|
|
|||
|
|
@ -0,0 +1,79 @@
|
|||
/******************************************************************************
|
||||
* 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
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/bug.h>
|
||||
#include <asm/paravirt.h>
|
||||
|
||||
#define DECLARE(name) \
|
||||
extern unsigned long \
|
||||
__ia64_native_start_gate_##name##_patchlist[]; \
|
||||
extern unsigned long \
|
||||
__ia64_native_end_gate_##name##_patchlist[]
|
||||
|
||||
DECLARE(fsyscall);
|
||||
DECLARE(brl_fsys_bubble_down);
|
||||
DECLARE(vtop);
|
||||
DECLARE(mckinley_e9);
|
||||
|
||||
extern unsigned long __start_gate_section[];
|
||||
|
||||
#define ASSIGN(name) \
|
||||
.start_##name##_patchlist = \
|
||||
(unsigned long)__ia64_native_start_gate_##name##_patchlist, \
|
||||
.end_##name##_patchlist = \
|
||||
(unsigned long)__ia64_native_end_gate_##name##_patchlist
|
||||
|
||||
struct pv_patchdata pv_patchdata __initdata = {
|
||||
ASSIGN(fsyscall),
|
||||
ASSIGN(brl_fsys_bubble_down),
|
||||
ASSIGN(vtop),
|
||||
ASSIGN(mckinley_e9),
|
||||
|
||||
.gate_section = (void*)__start_gate_section,
|
||||
};
|
||||
|
||||
|
||||
unsigned long __init
|
||||
paravirt_get_gate_patchlist(enum pv_gate_patchlist type)
|
||||
{
|
||||
|
||||
#define CASE(NAME, name) \
|
||||
case PV_GATE_START_##NAME: \
|
||||
return pv_patchdata.start_##name##_patchlist; \
|
||||
case PV_GATE_END_##NAME: \
|
||||
return pv_patchdata.end_##name##_patchlist; \
|
||||
|
||||
switch (type) {
|
||||
CASE(FSYSCALL, fsyscall);
|
||||
CASE(BRL_FSYS_BUBBLE_DOWN, brl_fsys_bubble_down);
|
||||
CASE(VTOP, vtop);
|
||||
CASE(MCKINLEY_E9, mckinley_e9);
|
||||
default:
|
||||
BUG();
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
void * __init
|
||||
paravirt_get_gate_section(void)
|
||||
{
|
||||
return pv_patchdata.gate_section;
|
||||
}
|
||||
|
|
@ -0,0 +1,28 @@
|
|||
/******************************************************************************
|
||||
* linux/arch/ia64/xen/paravirt_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
|
||||
*
|
||||
*/
|
||||
|
||||
#if defined(__IA64_GATE_PARAVIRTUALIZED_XEN)
|
||||
#include <asm/xen/patchlist.h>
|
||||
#else
|
||||
#include <asm/native/patchlist.h>
|
||||
#endif
|
||||
|
||||
|
|
@ -227,13 +227,13 @@ patch_brl_fsys_bubble_down (unsigned long start, unsigned long end)
|
|||
void __init
|
||||
ia64_patch_gate (void)
|
||||
{
|
||||
# define START(name) ((unsigned long) __start_gate_##name##_patchlist)
|
||||
# define END(name) ((unsigned long)__end_gate_##name##_patchlist)
|
||||
# define START(name) paravirt_get_gate_patchlist(PV_GATE_START_##name)
|
||||
# define END(name) paravirt_get_gate_patchlist(PV_GATE_END_##name)
|
||||
|
||||
patch_fsyscall_table(START(fsyscall), END(fsyscall));
|
||||
patch_brl_fsys_bubble_down(START(brl_fsys_bubble_down), END(brl_fsys_bubble_down));
|
||||
ia64_patch_vtop(START(vtop), END(vtop));
|
||||
ia64_patch_mckinley_e9(START(mckinley_e9), END(mckinley_e9));
|
||||
patch_fsyscall_table(START(FSYSCALL), END(FSYSCALL));
|
||||
patch_brl_fsys_bubble_down(START(BRL_FSYS_BUBBLE_DOWN), END(BRL_FSYS_BUBBLE_DOWN));
|
||||
ia64_patch_vtop(START(VTOP), END(VTOP));
|
||||
ia64_patch_mckinley_e9(START(MCKINLEY_E9), END(MCKINLEY_E9));
|
||||
}
|
||||
|
||||
void ia64_patch_phys_stack_reg(unsigned long val)
|
||||
|
|
|
|||
|
|
@ -260,6 +260,7 @@ put_kernel_page (struct page *page, unsigned long address, pgprot_t pgprot)
|
|||
static void __init
|
||||
setup_gate (void)
|
||||
{
|
||||
void *gate_section;
|
||||
struct page *page;
|
||||
|
||||
/*
|
||||
|
|
@ -267,10 +268,11 @@ setup_gate (void)
|
|||
* headers etc. and once execute-only page to enable
|
||||
* privilege-promotion via "epc":
|
||||
*/
|
||||
page = virt_to_page(ia64_imva(__start_gate_section));
|
||||
gate_section = paravirt_get_gate_section();
|
||||
page = virt_to_page(ia64_imva(gate_section));
|
||||
put_kernel_page(page, GATE_ADDR, PAGE_READONLY);
|
||||
#ifdef HAVE_BUGGY_SEGREL
|
||||
page = virt_to_page(ia64_imva(__start_gate_section + PAGE_SIZE));
|
||||
page = virt_to_page(ia64_imva(gate_section + PAGE_SIZE));
|
||||
put_kernel_page(page, GATE_ADDR + PAGE_SIZE, PAGE_GATE);
|
||||
#else
|
||||
put_kernel_page(page, GATE_ADDR + PERCPU_PAGE_SIZE, PAGE_GATE);
|
||||
|
|
|
|||
Loading…
Reference in New Issue