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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-26 07:44:09 -0800 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-26 07:44:09 -0800 |
commit | 7c811e4b6af424c295e3c6438fdc9b647fe6595f (patch) | |
tree | feab985b30e44102eca093e71ccdfad4f0318087 /include | |
parent | 37c00b84d0c1b5c4c65ae837e2235160c03e84c2 (diff) | |
parent | f18edc95a37a901ffcbe91f5e05105f916a04fae (diff) | |
download | blackbird-op-linux-7c811e4b6af424c295e3c6438fdc9b647fe6595f.tar.gz blackbird-op-linux-7c811e4b6af424c295e3c6438fdc9b647fe6595f.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: (24 commits)
x86: no robust/pi futex for real i386 CPUs
x86: fix boot failure on 486 due to TSC breakage
x86: fix build on non-C locales.
x86: make c_idle.work have a static address.
x86: don't save unreliable stack trace entries
x86: don't make swapper_pg_pmd global
x86: don't print a warning when MTRR are blank and running in KVM
x86: fix execve with -fstack-protect
x86: fix vsyscall wreckage
x86: rename KERNEL_TEXT_SIZE => KERNEL_IMAGE_SIZE
x86: fix spontaneous reboot with allyesconfig bzImage
x86: remove double-checking empty zero pages debug
x86: notsc is ignored on common configurations
x86/mtrr: fix kernel-doc missing notation
x86: handle BIOSes which terminate e820 with CF=1 and no SMAP
x86: add comments for NOPs
x86: don't use P6_NOPs if compiling with CONFIG_X86_GENERIC
x86: require family >= 6 if we are using P6 NOPs
x86: do not promote TM3x00/TM5x00 to i686-class
x86: hpet fix docbook comment
...
Diffstat (limited to 'include')
-rw-r--r-- | include/asm-x86/futex.h | 7 | ||||
-rw-r--r-- | include/asm-x86/lguest.h | 11 | ||||
-rw-r--r-- | include/asm-x86/nops.h | 66 | ||||
-rw-r--r-- | include/asm-x86/page_64.h | 8 |
4 files changed, 70 insertions, 22 deletions
diff --git a/include/asm-x86/futex.h b/include/asm-x86/futex.h index cd9f894dd2d7..c9952ea9f698 100644 --- a/include/asm-x86/futex.h +++ b/include/asm-x86/futex.h @@ -102,6 +102,13 @@ futex_atomic_op_inuser(int encoded_op, int __user *uaddr) static inline int futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval) { + +#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_BSWAP) + /* Real i386 machines have no cmpxchg instruction */ + if (boot_cpu_data.x86 == 3) + return -ENOSYS; +#endif + if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int))) return -EFAULT; diff --git a/include/asm-x86/lguest.h b/include/asm-x86/lguest.h index 4d9367b72976..9b17571e9bc3 100644 --- a/include/asm-x86/lguest.h +++ b/include/asm-x86/lguest.h @@ -23,6 +23,17 @@ /* Found in switcher.S */ extern unsigned long default_idt_entries[]; +/* Declarations for definitions in lguest_guest.S */ +extern char lguest_noirq_start[], lguest_noirq_end[]; +extern const char lgstart_cli[], lgend_cli[]; +extern const char lgstart_sti[], lgend_sti[]; +extern const char lgstart_popf[], lgend_popf[]; +extern const char lgstart_pushf[], lgend_pushf[]; +extern const char lgstart_iret[], lgend_iret[]; + +extern void lguest_iret(void); +extern void lguest_init(void); + struct lguest_regs { /* Manually saved part. */ diff --git a/include/asm-x86/nops.h b/include/asm-x86/nops.h index fec025c7f58c..e3b2bce0aff8 100644 --- a/include/asm-x86/nops.h +++ b/include/asm-x86/nops.h @@ -3,17 +3,29 @@ /* Define nops for use with alternative() */ -/* generic versions from gas */ -#define GENERIC_NOP1 ".byte 0x90\n" -#define GENERIC_NOP2 ".byte 0x89,0xf6\n" -#define GENERIC_NOP3 ".byte 0x8d,0x76,0x00\n" -#define GENERIC_NOP4 ".byte 0x8d,0x74,0x26,0x00\n" -#define GENERIC_NOP5 GENERIC_NOP1 GENERIC_NOP4 -#define GENERIC_NOP6 ".byte 0x8d,0xb6,0x00,0x00,0x00,0x00\n" -#define GENERIC_NOP7 ".byte 0x8d,0xb4,0x26,0x00,0x00,0x00,0x00\n" -#define GENERIC_NOP8 GENERIC_NOP1 GENERIC_NOP7 +/* generic versions from gas + 1: nop + 2: movl %esi,%esi + 3: leal 0x00(%esi),%esi + 4: leal 0x00(,%esi,1),%esi + 6: leal 0x00000000(%esi),%esi + 7: leal 0x00000000(,%esi,1),%esi +*/ +#define GENERIC_NOP1 ".byte 0x90\n" +#define GENERIC_NOP2 ".byte 0x89,0xf6\n" +#define GENERIC_NOP3 ".byte 0x8d,0x76,0x00\n" +#define GENERIC_NOP4 ".byte 0x8d,0x74,0x26,0x00\n" +#define GENERIC_NOP5 GENERIC_NOP1 GENERIC_NOP4 +#define GENERIC_NOP6 ".byte 0x8d,0xb6,0x00,0x00,0x00,0x00\n" +#define GENERIC_NOP7 ".byte 0x8d,0xb4,0x26,0x00,0x00,0x00,0x00\n" +#define GENERIC_NOP8 GENERIC_NOP1 GENERIC_NOP7 -/* Opteron 64bit nops */ +/* Opteron 64bit nops + 1: nop + 2: osp nop + 3: osp osp nop + 4: osp osp osp nop +*/ #define K8_NOP1 GENERIC_NOP1 #define K8_NOP2 ".byte 0x66,0x90\n" #define K8_NOP3 ".byte 0x66,0x66,0x90\n" @@ -23,19 +35,35 @@ #define K8_NOP7 K8_NOP4 K8_NOP3 #define K8_NOP8 K8_NOP4 K8_NOP4 -/* K7 nops */ -/* uses eax dependencies (arbitary choice) */ -#define K7_NOP1 GENERIC_NOP1 +/* K7 nops + uses eax dependencies (arbitary choice) + 1: nop + 2: movl %eax,%eax + 3: leal (,%eax,1),%eax + 4: leal 0x00(,%eax,1),%eax + 6: leal 0x00000000(%eax),%eax + 7: leal 0x00000000(,%eax,1),%eax +*/ +#define K7_NOP1 GENERIC_NOP1 #define K7_NOP2 ".byte 0x8b,0xc0\n" #define K7_NOP3 ".byte 0x8d,0x04,0x20\n" #define K7_NOP4 ".byte 0x8d,0x44,0x20,0x00\n" #define K7_NOP5 K7_NOP4 ASM_NOP1 #define K7_NOP6 ".byte 0x8d,0x80,0,0,0,0\n" -#define K7_NOP7 ".byte 0x8D,0x04,0x05,0,0,0,0\n" -#define K7_NOP8 K7_NOP7 ASM_NOP1 +#define K7_NOP7 ".byte 0x8D,0x04,0x05,0,0,0,0\n" +#define K7_NOP8 K7_NOP7 ASM_NOP1 -/* P6 nops */ -/* uses eax dependencies (Intel-recommended choice) */ +/* P6 nops + uses eax dependencies (Intel-recommended choice) + 1: nop + 2: osp nop + 3: nopl (%eax) + 4: nopl 0x00(%eax) + 5: nopl 0x00(%eax,%eax,1) + 6: osp nopl 0x00(%eax,%eax,1) + 7: nopl 0x00000000(%eax) + 8: nopl 0x00000000(%eax,%eax,1) +*/ #define P6_NOP1 GENERIC_NOP1 #define P6_NOP2 ".byte 0x66,0x90\n" #define P6_NOP3 ".byte 0x0f,0x1f,0x00\n" @@ -63,9 +91,7 @@ #define ASM_NOP6 K7_NOP6 #define ASM_NOP7 K7_NOP7 #define ASM_NOP8 K7_NOP8 -#elif defined(CONFIG_M686) || defined(CONFIG_MPENTIUMII) || \ - defined(CONFIG_MPENTIUMIII) || defined(CONFIG_MPENTIUMM) || \ - defined(CONFIG_MCORE2) || defined(CONFIG_PENTIUM4) +#elif defined(CONFIG_X86_P6_NOP) #define ASM_NOP1 P6_NOP1 #define ASM_NOP2 P6_NOP2 #define ASM_NOP3 P6_NOP3 diff --git a/include/asm-x86/page_64.h b/include/asm-x86/page_64.h index f7393bc516ef..143546073b95 100644 --- a/include/asm-x86/page_64.h +++ b/include/asm-x86/page_64.h @@ -47,8 +47,12 @@ #define __PHYSICAL_MASK_SHIFT 46 #define __VIRTUAL_MASK_SHIFT 48 -#define KERNEL_TEXT_SIZE (40*1024*1024) -#define KERNEL_TEXT_START _AC(0xffffffff80000000, UL) +/* + * Kernel image size is limited to 128 MB (see level2_kernel_pgt in + * arch/x86/kernel/head_64.S), and it is mapped here: + */ +#define KERNEL_IMAGE_SIZE (128*1024*1024) +#define KERNEL_IMAGE_START _AC(0xffffffff80000000, UL) #ifndef __ASSEMBLY__ void clear_page(void *page); |