diff options
| -rw-r--r-- | arch/ia64/include/asm/native/patchlist.h | 38 | ||||
| -rw-r--r-- | arch/ia64/include/asm/paravirt.h | 35 | ||||
| -rw-r--r-- | arch/ia64/kernel/Makefile | 32 | ||||
| -rw-r--r-- | arch/ia64/kernel/Makefile.gate | 27 | ||||
| -rw-r--r-- | arch/ia64/kernel/gate.lds.S | 17 | ||||
| -rw-r--r-- | arch/ia64/kernel/paravirt_patchlist.c | 79 | ||||
| -rw-r--r-- | arch/ia64/kernel/paravirt_patchlist.h | 28 | ||||
| -rw-r--r-- | arch/ia64/kernel/patch.c | 12 | ||||
| -rw-r--r-- | arch/ia64/mm/init.c | 6 |
9 files changed, 231 insertions, 43 deletions
diff --git a/arch/ia64/include/asm/native/patchlist.h b/arch/ia64/include/asm/native/patchlist.h new file mode 100644 index 00000000000..be16ca9311b --- /dev/null +++ b/arch/ia64/include/asm/native/patchlist.h @@ -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 diff --git a/arch/ia64/include/asm/paravirt.h b/arch/ia64/include/asm/paravirt.h index a73e77add7e..fc433f6c327 100644 --- a/arch/ia64/include/asm/paravirt.h +++ b/arch/ia64/include/asm/paravirt.h @@ -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 diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile index 1ab150ec8ce..8dc9df8a87a 100644 --- a/arch/ia64/kernel/Makefile +++ b/arch/ia64/kernel/Makefile @@ -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 $(srctree)/arch/ia64/kernel/Makefile.gate +# tell compiled for native +CPPFLAGS_gate.lds += -D__IA64_GATE_PARAVIRTUALIZED_NATIVE # Calculate NR_IRQ = max(IA64_NATIVE_NR_IRQS, XEN_NR_IRQS, ...) based on config define sed-y diff --git a/arch/ia64/kernel/Makefile.gate b/arch/ia64/kernel/Makefile.gate new file mode 100644 index 00000000000..1d87f84069b --- /dev/null +++ b/arch/ia64/kernel/Makefile.gate @@ -0,0 +1,27 @@ +# The gate DSO image is built using a special linker script. + +targets += gate.so gate-syms.o + +extra-y += gate.so gate-syms.o gate.lds gate.o + +CPPFLAGS_gate.lds := -P -C -U$(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 diff --git a/arch/ia64/kernel/gate.lds.S b/arch/ia64/kernel/gate.lds.S index 3cb1abc00e2..88c64ed47c3 100644 --- a/arch/ia64/kernel/gate.lds.S +++ b/arch/ia64/kernel/gate.lds.S @@ -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*) } diff --git a/arch/ia64/kernel/paravirt_patchlist.c b/arch/ia64/kernel/paravirt_patchlist.c new file mode 100644 index 00000000000..b28082a95d4 --- /dev/null +++ b/arch/ia64/kernel/paravirt_patchlist.c @@ -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; +} diff --git a/arch/ia64/kernel/paravirt_patchlist.h b/arch/ia64/kernel/paravirt_patchlist.h new file mode 100644 index 00000000000..0684aa6c650 --- /dev/null +++ b/arch/ia64/kernel/paravirt_patchlist.h @@ -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 + diff --git a/arch/ia64/kernel/patch.c b/arch/ia64/kernel/patch.c index 02dd977436f..64c6f95daa3 100644 --- a/arch/ia64/kernel/patch.c +++ b/arch/ia64/kernel/patch.c @@ -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) diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c index c9bc5b305ff..8503d534794 100644 --- a/arch/ia64/mm/init.c +++ b/arch/ia64/mm/init.c @@ -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); |