[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] Updated 2.6.0 linux kernel patch for qemu-fast
|
From: |
Rusty Russell |
|
Subject: |
[Qemu-devel] Updated 2.6.0 linux kernel patch for qemu-fast |
|
Date: |
Fri, 26 Dec 2003 16:49:20 +1100 |
Hi all,
If you've been trying to use a patched Linux kernel with
qemu-fast, and get this message:
Inconsistency detected by ld.so: rtld.c: 1192: dl_main: Assertion `(void *)
ph->p_vaddr == _rtld_local._dl_sysinfo_dso' failed!
It's the newer glibc's trying to use the vsyscalls. This patch fixes
it, by making vsyscalls.lds a generated file, so it can use the
FIXADDR_TOP constant rather than hardcoding the value.
Cheers,
Rusty.
--
Anyone who quotes me in their sig is an idiot. -- Rusty Russell.
Name: QEMU CONFIG Patch
Author: Rusty Russell
Status: Tested on 2.6.0
D: Convenient patch based on Fabrice Bellard's documentation on how to
D: boot an x86 kernel under qemu. Adjusts PAGE_OFFSET, HZ, and
D: FIXADDR_TOP.
diff -urpN --exclude TAGS -X
/home/rusty/devel/kernel/kernel-patches/current-dontdiff --minimal
.32324-linux-2.6.0/arch/i386/Kconfig
.32324-linux-2.6.0.updated/arch/i386/Kconfig
--- .32324-linux-2.6.0/arch/i386/Kconfig 2003-10-09 18:02:48.000000000
+1000
+++ .32324-linux-2.6.0.updated/arch/i386/Kconfig 2003-12-26
16:46:49.000000000 +1100
@@ -307,6 +307,14 @@ config X86_GENERIC
when it has moderate overhead. This is intended for generic
distributions kernels.
+config QEMU
+ bool "Kernel to run under QEMU"
+ depends on EXPERIMENTAL
+ help
+ Select this if you want to boot the kernel inside qemu-fast,
+ the non-mmu version of the x86 emulator. See
+ <http://fabrice.bellard.free.fr/qemu/>. Say N.
+
#
# Define implied options from the CPU selection here
#
diff -urpN --exclude TAGS -X
/home/rusty/devel/kernel/kernel-patches/current-dontdiff --minimal
.32324-linux-2.6.0/arch/i386/kernel/Makefile
.32324-linux-2.6.0.updated/arch/i386/kernel/Makefile
--- .32324-linux-2.6.0/arch/i386/kernel/Makefile 2003-09-29
10:25:15.000000000 +1000
+++ .32324-linux-2.6.0.updated/arch/i386/kernel/Makefile 2003-12-26
16:46:49.000000000 +1100
@@ -46,12 +46,14 @@ quiet_cmd_syscall = SYSCALL $@
cmd_syscall = $(CC) -nostdlib $(SYSCFLAGS_$(@F)) \
-Wl,-T,$(filter-out FORCE,$^) -o $@
+export AFLAGS_vsyscall.lds.o += -P -C -U$(ARCH)
+
vsyscall-flags = -shared -s -Wl,-soname=linux-gate.so.1
SYSCFLAGS_vsyscall-sysenter.so = $(vsyscall-flags)
SYSCFLAGS_vsyscall-int80.so = $(vsyscall-flags)
$(obj)/vsyscall-int80.so $(obj)/vsyscall-sysenter.so: \
-$(obj)/vsyscall-%.so: $(src)/vsyscall.lds $(obj)/vsyscall-%.o FORCE
+$(obj)/vsyscall-%.so: $(src)/vsyscall.lds.s $(obj)/vsyscall-%.o FORCE
$(call if_changed,syscall)
# We also create a special relocatable object that should mirror the symbol
@@ -62,5 +64,5 @@ $(obj)/built-in.o: $(obj)/vsyscall-syms.
$(obj)/built-in.o: ld_flags += -R $(obj)/vsyscall-syms.o
SYSCFLAGS_vsyscall-syms.o = -r
-$(obj)/vsyscall-syms.o: $(src)/vsyscall.lds $(obj)/vsyscall-sysenter.o FORCE
+$(obj)/vsyscall-syms.o: $(src)/vsyscall.lds.s $(obj)/vsyscall-sysenter.o FORCE
$(call if_changed,syscall)
diff -urpN --exclude TAGS -X
/home/rusty/devel/kernel/kernel-patches/current-dontdiff --minimal
.32324-linux-2.6.0/arch/i386/kernel/vmlinux.lds.S
.32324-linux-2.6.0.updated/arch/i386/kernel/vmlinux.lds.S
--- .32324-linux-2.6.0/arch/i386/kernel/vmlinux.lds.S 2003-09-22
10:27:28.000000000 +1000
+++ .32324-linux-2.6.0.updated/arch/i386/kernel/vmlinux.lds.S 2003-12-26
16:46:49.000000000 +1100
@@ -3,6 +3,7 @@
*/
#include <asm-generic/vmlinux.lds.h>
+#include <asm/page.h>
OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
OUTPUT_ARCH(i386)
@@ -10,7 +11,7 @@ ENTRY(startup_32)
jiffies = jiffies_64;
SECTIONS
{
- . = 0xC0000000 + 0x100000;
+ . = __PAGE_OFFSET + 0x100000;
/* read-only */
_text = .; /* Text and read-only data */
.text : {
diff -urpN --exclude TAGS -X
/home/rusty/devel/kernel/kernel-patches/current-dontdiff --minimal
.32324-linux-2.6.0/arch/i386/kernel/vsyscall.lds
.32324-linux-2.6.0.updated/arch/i386/kernel/vsyscall.lds
--- .32324-linux-2.6.0/arch/i386/kernel/vsyscall.lds 2003-09-22
10:07:26.000000000 +1000
+++ .32324-linux-2.6.0.updated/arch/i386/kernel/vsyscall.lds 1970-01-01
10:00:00.000000000 +1000
@@ -1,67 +0,0 @@
-/*
- * Linker script for vsyscall DSO. The vsyscall page is an ELF shared
- * object prelinked to its virtual address, and with only one read-only
- * segment (that fits in one page). This script controls its layout.
- */
-
-/* This must match <asm/fixmap.h>. */
-VSYSCALL_BASE = 0xffffe000;
-
-SECTIONS
-{
- . = VSYSCALL_BASE + SIZEOF_HEADERS;
-
- .hash : { *(.hash) } :text
- .dynsym : { *(.dynsym) }
- .dynstr : { *(.dynstr) }
- .gnu.version : { *(.gnu.version) }
- .gnu.version_d : { *(.gnu.version_d) }
- .gnu.version_r : { *(.gnu.version_r) }
-
- /* This linker script is used both with -r and with -shared.
- For the layouts to match, we need to skip more than enough
- space for the dynamic symbol table et al. If this amount
- is insufficient, ld -shared will barf. Just increase it here. */
- . = VSYSCALL_BASE + 0x400;
-
- .text : { *(.text) } :text =0x90909090
-
- .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
- .eh_frame : { KEEP (*(.eh_frame)) } :text
- .dynamic : { *(.dynamic) } :text :dynamic
- .useless : {
- *(.got.plt) *(.got)
- *(.data .data.* .gnu.linkonce.d.*)
- *(.dynbss)
- *(.bss .bss.* .gnu.linkonce.b.*)
- } :text
-}
-
-/*
- * We must supply the ELF program headers explicitly to get just one
- * PT_LOAD segment, and set the flags explicitly to make segments read-only.
- */
-PHDRS
-{
- text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
- dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
- eh_frame_hdr 0x6474e550; /* PT_GNU_EH_FRAME, but ld doesn't match the name */
-}
-
-/*
- * This controls what symbols we export from the DSO.
- */
-VERSION
-{
- LINUX_2.5 {
- global:
- __kernel_vsyscall;
- __kernel_sigreturn;
- __kernel_rt_sigreturn;
-
- local: *;
- };
-}
-
-/* The ELF entry point can be used to set the AT_SYSINFO value. */
-ENTRY(__kernel_vsyscall);
diff -urpN --exclude TAGS -X
/home/rusty/devel/kernel/kernel-patches/current-dontdiff --minimal
.32324-linux-2.6.0/arch/i386/kernel/vsyscall.lds.S
.32324-linux-2.6.0.updated/arch/i386/kernel/vsyscall.lds.S
--- .32324-linux-2.6.0/arch/i386/kernel/vsyscall.lds.S 1970-01-01
10:00:00.000000000 +1000
+++ .32324-linux-2.6.0.updated/arch/i386/kernel/vsyscall.lds.S 2003-12-26
16:46:49.000000000 +1100
@@ -0,0 +1,67 @@
+/*
+ * Linker script for vsyscall DSO. The vsyscall page is an ELF shared
+ * object prelinked to its virtual address, and with only one read-only
+ * segment (that fits in one page). This script controls its layout.
+ */
+#include <asm/fixmap.h>
+
+VSYSCALL_BASE = __FIXADDR_TOP - 0x1000;
+
+SECTIONS
+{
+ . = VSYSCALL_BASE + SIZEOF_HEADERS;
+
+ .hash : { *(.hash) } :text
+ .dynsym : { *(.dynsym) }
+ .dynstr : { *(.dynstr) }
+ .gnu.version : { *(.gnu.version) }
+ .gnu.version_d : { *(.gnu.version_d) }
+ .gnu.version_r : { *(.gnu.version_r) }
+
+ /* This linker script is used both with -r and with -shared.
+ For the layouts to match, we need to skip more than enough
+ space for the dynamic symbol table et al. If this amount
+ is insufficient, ld -shared will barf. Just increase it here. */
+ . = VSYSCALL_BASE + 0x400;
+
+ .text : { *(.text) } :text =0x90909090
+
+ .eh_frame_hdr : { *(.eh_frame_hdr) } :text :eh_frame_hdr
+ .eh_frame : { KEEP (*(.eh_frame)) } :text
+ .dynamic : { *(.dynamic) } :text :dynamic
+ .useless : {
+ *(.got.plt) *(.got)
+ *(.data .data.* .gnu.linkonce.d.*)
+ *(.dynbss)
+ *(.bss .bss.* .gnu.linkonce.b.*)
+ } :text
+}
+
+/*
+ * We must supply the ELF program headers explicitly to get just one
+ * PT_LOAD segment, and set the flags explicitly to make segments read-only.
+ */
+PHDRS
+{
+ text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */
+ dynamic PT_DYNAMIC FLAGS(4); /* PF_R */
+ eh_frame_hdr 0x6474e550; /* PT_GNU_EH_FRAME, but ld doesn't match the name */
+}
+
+/*
+ * This controls what symbols we export from the DSO.
+ */
+VERSION
+{
+ LINUX_2.5 {
+ global:
+ __kernel_vsyscall;
+ __kernel_sigreturn;
+ __kernel_rt_sigreturn;
+
+ local: *;
+ };
+}
+
+/* The ELF entry point can be used to set the AT_SYSINFO value. */
+ENTRY(__kernel_vsyscall);
diff -urpN --exclude TAGS -X
/home/rusty/devel/kernel/kernel-patches/current-dontdiff --minimal
.32324-linux-2.6.0/include/asm-i386/fixmap.h
.32324-linux-2.6.0.updated/include/asm-i386/fixmap.h
--- .32324-linux-2.6.0/include/asm-i386/fixmap.h 2003-09-22
10:09:12.000000000 +1000
+++ .32324-linux-2.6.0.updated/include/asm-i386/fixmap.h 2003-12-26
16:46:49.000000000 +1100
@@ -14,6 +14,19 @@
#define _ASM_FIXMAP_H
#include <linux/config.h>
+
+/* used by vmalloc.c, vsyscall.lds.S.
+ *
+ * Leave one empty page between vmalloc'ed areas and
+ * the start of the fixmap.
+ */
+#ifdef CONFIG_QEMU
+#define __FIXADDR_TOP 0xa7fff000
+#else
+#define __FIXADDR_TOP 0xfffff000
+#endif
+
+#ifndef __ASSEMBLY__
#include <linux/kernel.h>
#include <asm/acpi.h>
#include <asm/apicdef.h>
@@ -94,13 +107,8 @@ extern void __set_fixmap (enum fixed_add
#define clear_fixmap(idx) \
__set_fixmap(idx, 0, __pgprot(0))
-/*
- * used by vmalloc.c.
- *
- * Leave one empty page between vmalloc'ed areas and
- * the start of the fixmap.
- */
-#define FIXADDR_TOP (0xfffff000UL)
+#define FIXADDR_TOP ((unsigned long)__FIXADDR_TOP)
+
#define __FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT)
#define FIXADDR_START (FIXADDR_TOP - __FIXADDR_SIZE)
@@ -145,4 +153,5 @@ static inline unsigned long virt_to_fix(
return __virt_to_fix(vaddr);
}
+#endif /* !__ASSEMBLY__ */
#endif
diff -urpN --exclude TAGS -X
/home/rusty/devel/kernel/kernel-patches/current-dontdiff --minimal
.32324-linux-2.6.0/include/asm-i386/page.h
.32324-linux-2.6.0.updated/include/asm-i386/page.h
--- .32324-linux-2.6.0/include/asm-i386/page.h 2003-09-22 10:06:42.000000000
+1000
+++ .32324-linux-2.6.0.updated/include/asm-i386/page.h 2003-12-26
16:46:49.000000000 +1100
@@ -10,10 +10,10 @@
#define LARGE_PAGE_SIZE (1UL << PMD_SHIFT)
#ifdef __KERNEL__
-#ifndef __ASSEMBLY__
-
#include <linux/config.h>
+#ifndef __ASSEMBLY__
+
#ifdef CONFIG_X86_USE_3DNOW
#include <asm/mmx.h>
@@ -115,12 +115,19 @@ static __inline__ int get_order(unsigned
#endif /* __ASSEMBLY__ */
#ifdef __ASSEMBLY__
+#ifdef CONFIG_QEMU
+#define __PAGE_OFFSET (0x90000000)
+#else
#define __PAGE_OFFSET (0xC0000000)
+#endif /* QEMU */
+#else
+#ifdef CONFIG_QEMU
+#define __PAGE_OFFSET (0x90000000UL)
#else
#define __PAGE_OFFSET (0xC0000000UL)
+#endif /* QEMU */
#endif
-
#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
#define VMALLOC_RESERVE ((unsigned long)__VMALLOC_RESERVE)
#define MAXMEM (-__PAGE_OFFSET-__VMALLOC_RESERVE)
diff -urpN --exclude TAGS -X
/home/rusty/devel/kernel/kernel-patches/current-dontdiff --minimal
.32324-linux-2.6.0/include/asm-i386/param.h
.32324-linux-2.6.0.updated/include/asm-i386/param.h
--- .32324-linux-2.6.0/include/asm-i386/param.h 2003-09-21 17:26:06.000000000
+1000
+++ .32324-linux-2.6.0.updated/include/asm-i386/param.h 2003-12-26
16:46:49.000000000 +1100
@@ -2,7 +2,12 @@
#define _ASMi386_PARAM_H
#ifdef __KERNEL__
-# define HZ 1000 /* Internal kernel timer frequency */
+# include <linux/config.h>
+# ifdef CONFIG_QEMU
+# define HZ 100
+# else
+# define HZ 1000 /* Internal kernel timer frequency */
+# endif
# define USER_HZ 100 /* .. some user interfaces are in
"ticks" */
# define CLOCKS_PER_SEC (USER_HZ) /* like times() */
#endif
| [Prev in Thread] |
Current Thread |
[Next in Thread] |
- [Qemu-devel] Updated 2.6.0 linux kernel patch for qemu-fast,
Rusty Russell <=