[Xen-changelog] .del-bugs.h~d4d01078e5137b63:

[BitKeeper Bot <riel@xxxxxxxxxxx>]

ChangeSet 1.1703, 2005/06/08 18:38:07+01:00, vh249@xxxxxxxxxxxxxxxxxxxxxx

        .del-bugs.h~d4d01078e5137b63:
          Delete: linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/bugs.h



 bugs.h |  214 -----------------------------------------------------------------
 1 files changed, 214 deletions(-)


diff -Nru a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/bugs.h 
b/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/bugs.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/bugs.h   2005-06-08 
18:03:31 -04:00
+++ /dev/null   Wed Dec 31 16:00:00 196900
@@ -1,214 +0,0 @@
-/*
- *  include/asm-i386/bugs.h
- *
- *  Copyright (C) 1994  Linus Torvalds
- *
- *  Cyrix stuff, June 1998 by:
- *     - Rafael R. Reilova (moved everything from head.S),
- *        <rreilova@xxxxxxxxxxxx>
- *     - Channing Corn (tests & fixes),
- *     - Andrew D. Balsa (code cleanup).
- *
- *  Pentium III FXSR, SSE support
- *     Gareth Hughes <gareth@xxxxxxxxxxx>, May 2000
- */
-
-/*
- * This is included by init/main.c to check for architecture-dependent bugs.
- *
- * Needs:
- *     void check_bugs(void);
- */
-
-#include <linux/config.h>
-#include <linux/init.h>
-#include <asm/processor.h>
-#include <asm/i387.h>
-#include <asm/msr.h>
-
-static int __init no_halt(char *s)
-{
-       boot_cpu_data.hlt_works_ok = 0;
-       return 1;
-}
-
-__setup("no-hlt", no_halt);
-
-static int __init mca_pentium(char *s)
-{
-       mca_pentium_flag = 1;
-       return 1;
-}
-
-__setup("mca-pentium", mca_pentium);
-
-static int __init no_387(char *s)
-{
-       boot_cpu_data.hard_math = 0;
-       write_cr0(0xE | read_cr0());
-       return 1;
-}
-
-__setup("no387", no_387);
-
-static double __initdata x = 4195835.0;
-static double __initdata y = 3145727.0;
-
-/*
- * This used to check for exceptions.. 
- * However, it turns out that to support that,
- * the XMM trap handlers basically had to
- * be buggy. So let's have a correct XMM trap
- * handler, and forget about printing out
- * some status at boot.
- *
- * We should really only care about bugs here
- * anyway. Not features.
- */
-static void __init check_fpu(void)
-{
-       if (!boot_cpu_data.hard_math) {
-#ifndef CONFIG_MATH_EMULATION
-               printk(KERN_EMERG "No coprocessor found and no math emulation 
present.\n");
-               printk(KERN_EMERG "Giving up.\n");
-               for (;;) ;
-#endif
-               return;
-       }
-
-/* Enable FXSR and company _before_ testing for FP problems. */
-       /*
-        * Verify that the FXSAVE/FXRSTOR data will be 16-byte aligned.
-        */
-       if (offsetof(struct task_struct, thread.i387.fxsave) & 15) {
-               extern void __buggy_fxsr_alignment(void);
-               __buggy_fxsr_alignment();
-       }
-       if (cpu_has_fxsr) {
-               printk(KERN_INFO "Enabling fast FPU save and restore... ");
-               set_in_cr4(X86_CR4_OSFXSR);
-               printk("done.\n");
-       }
-       if (cpu_has_xmm) {
-               printk(KERN_INFO "Enabling unmasked SIMD FPU exception 
support... ");
-               set_in_cr4(X86_CR4_OSXMMEXCPT);
-               printk("done.\n");
-       }
-
-       /* Test for the divl bug.. */
-       __asm__("fninit\n\t"
-               "fldl %1\n\t"
-               "fdivl %2\n\t"
-               "fmull %2\n\t"
-               "fldl %1\n\t"
-               "fsubp %%st,%%st(1)\n\t"
-               "fistpl %0\n\t"
-               "fwait\n\t"
-               "fninit"
-               : "=m" (*&boot_cpu_data.fdiv_bug)
-               : "m" (*&x), "m" (*&y));
-       stts();
-       if (boot_cpu_data.fdiv_bug)
-               printk("Hmm, FPU with FDIV bug.\n");
-}
-
-static void __init check_hlt(void)
-{
-       printk(KERN_INFO "Checking 'hlt' instruction... ");
-       if (!boot_cpu_data.hlt_works_ok) {
-               printk("disabled\n");
-               return;
-       }
-       __asm__ __volatile__("hlt ; hlt ; hlt ; hlt");
-       printk("OK.\n");
-}
-
-/*
- *     Most 386 processors have a bug where a POPAD can lock the 
- *     machine even from user space.
- */
- 
-static void __init check_popad(void)
-{
-#ifndef CONFIG_X86_POPAD_OK
-       int res, inp = (int) &res;
-
-       printk(KERN_INFO "Checking for popad bug... ");
-       __asm__ __volatile__( 
-         "movl $12345678,%%eax; movl $0,%%edi; pusha; popa; movl 
(%%edx,%%edi),%%ecx "
-         : "=&a" (res)
-         : "d" (inp)
-         : "ecx", "edi" );
-       /* If this fails, it means that any user program may lock the CPU hard. 
Too bad. */
-       if (res != 12345678) printk( "Buggy.\n" );
-                       else printk( "OK.\n" );
-#endif
-}
-
-/*
- * Check whether we are able to run this kernel safely on SMP.
- *
- * - In order to run on a i386, we need to be compiled for i386
- *   (for due to lack of "invlpg" and working WP on a i386)
- * - In order to run on anything without a TSC, we need to be
- *   compiled for a i486.
- * - In order to support the local APIC on a buggy Pentium machine,
- *   we need to be compiled with CONFIG_X86_GOOD_APIC disabled,
- *   which happens implicitly if compiled for a Pentium or lower
- *   (unless an advanced selection of CPU features is used) as an
- *   otherwise config implies a properly working local APIC without
- *   the need to do extra reads from the APIC.
-*/
-
-static void __init check_config(void)
-{
-/*
- * We'd better not be a i386 if we're configured to use some
- * i486+ only features! (WP works in supervisor mode and the
- * new "invlpg" and "bswap" instructions)
- */
-#if defined(CONFIG_X86_WP_WORKS_OK) || defined(CONFIG_X86_INVLPG) || 
defined(CONFIG_X86_BSWAP)
-       if (boot_cpu_data.x86 == 3)
-               panic("Kernel requires i486+ for 'invlpg' and other features");
-#endif
-
-/*
- * If we configured ourselves for a TSC, we'd better have one!
- */
-#ifdef CONFIG_X86_TSC
-       if (!cpu_has_tsc)
-               panic("Kernel compiled for Pentium+, requires TSC feature!");
-#endif
-
-/*
- * If we were told we had a good local APIC, check for buggy Pentia,
- * i.e. all B steppings and the C2 stepping of P54C when using their
- * integrated APIC (see 11AP erratum in "Pentium Processor
- * Specification Update").
- */
-#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_GOOD_APIC)
-       if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL
-           && cpu_has_apic
-           && boot_cpu_data.x86 == 5
-           && boot_cpu_data.x86_model == 2
-           && (boot_cpu_data.x86_mask < 6 || boot_cpu_data.x86_mask == 11))
-               panic("Kernel compiled for PMMX+, assumes a local APIC without 
the read-before-write bug!");
-#endif
-}
-
-extern void alternative_instructions(void);
-
-static void __init check_bugs(void)
-{
-       identify_cpu(&boot_cpu_data);
-#ifndef CONFIG_SMP
-       printk("CPU: ");
-       print_cpu_info(&boot_cpu_data);
-#endif
-       check_config();
-       check_fpu();
-       check_hlt();
-       check_popad();
-       system_utsname.machine[1] = '0' + (boot_cpu_data.x86 > 6 ? 6 : 
boot_cpu_data.x86);
-       alternative_instructions(); 
-}

_______________________________________________
Xen-changelog mailing list
Xen-changelog@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-changelog