uml: remove now unused code

This patch finishes what the previous one started.  The code was not used
after my first patch, and now can be removed with ease.

[ jdike - also deleted the #if 0 lcall stuff ]

Signed-off-by: Karol Swietlicki <magotari@gmail.com>
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 137 deletions

diff --git a/arch/um/sys-i386/bugs.c b/arch/um/sys-i386/bugs.c
index 797945cd3df2..fc991184850c 100644
--- a/arch/um/sys-i386/bugs.c
+++ b/arch/um/sys-i386/bugs.c
@@ -12,8 +12,6 @@
 #include "user.h"
 #include "sysdep/archsetjmp.h"
 
-#define MAXTOKEN 64
-
 /* Set during early boot */
 int host_has_cmov = 1;
 static jmp_buf cmov_test_return;
@@ -46,139 +44,8 @@ static void test_for_host_cmov(void)
         sigaction(SIGILL, &old, &new);
 }
 
-static char token(int fd, char *buf, int len, char stop)
-{
-        int n;
-        char *ptr, *end, c;
-
-        ptr = buf;
-        end = &buf[len];
-        do {
-                n = os_read_file(fd, ptr, sizeof(*ptr));
-                c = *ptr++;
-                if (n != sizeof(*ptr)) {
-                        if (n == 0)
-                                return 0;
-                        printk(UM_KERN_ERR "Reading /proc/cpuinfo failed, "
-                               "err = %d\n", -n);
-                        if (n < 0)
-                                return n;
-                        else return -EIO;
-                }
-        } while ((c != '\n') && (c != stop) && (ptr < end));
-
-        if (ptr == end) {
-                printk(UM_KERN_ERR "Failed to find '%c' in /proc/cpuinfo\n",
-                       stop);
-                return -1;
-        }
-        *(ptr - 1) = '\0';
-        return c;
-}
-
-static int find_cpuinfo_line(int fd, char *key, char *scratch, int len)
-{
-        int n;
-        char c;
-
-        scratch[len - 1] = '\0';
-        while (1) {
-                c = token(fd, scratch, len - 1, ':');
-                if (c <= 0)
-                        return 0;
-                else if (c != ':') {
-                        printk(UM_KERN_ERR "Failed to find ':' in "
-                               "/proc/cpuinfo\n");
-                        return 0;
-                }
-
-                if (!strncmp(scratch, key, strlen(key)))
-                        return 1;
-
-                do {
-                        n = os_read_file(fd, &c, sizeof(c));
-                        if (n != sizeof(c)) {
-                                printk(UM_KERN_ERR "Failed to find newline in "
-                                       "/proc/cpuinfo, err = %d\n", -n);
-                                return 0;
-                        }
-                } while (c != '\n');
-        }
-        return 0;
-}
-
-static int check_cpu_flag(char *feature, int *have_it)
-{
-        char buf[MAXTOKEN], c;
-        int fd, len = ARRAY_SIZE(buf);
-
-        printk(UM_KERN_INFO "Checking for host processor %s support...",
-               feature);
-        fd = os_open_file("/proc/cpuinfo", of_read(OPENFLAGS()), 0);
-        if (fd < 0) {
-                printk(UM_KERN_ERR "Couldn't open /proc/cpuinfo, err = %d\n",
-                       -fd);
-                return 0;
-        }
-
-        *have_it = 0;
-        if (!find_cpuinfo_line(fd, "flags", buf, ARRAY_SIZE(buf)))
-                goto out;
-
-        c = token(fd, buf, len - 1, ' ');
-        if (c < 0)
-                goto out;
-        else if (c != ' ') {
-                printk(UM_KERN_ERR "Failed to find ' ' in /proc/cpuinfo\n");
-                goto out;
-        }
-
-        while (1) {
-                c = token(fd, buf, len - 1, ' ');
-                if (c < 0)
-                        goto out;
-                else if (c == '\n')
-                        break;
-
-                if (!strcmp(buf, feature)) {
-                        *have_it = 1;
-                        goto out;
-                }
-        }
- out:
-        if (*have_it == 0)
-                printk("No\n");
-        else if (*have_it == 1)
-                printk("Yes\n");
-        os_close_file(fd);
-        return 1;
-}
-
-#if 0 /*
-       * This doesn't work in tt mode, plus it's causing compilation problems
-       * for some people.
-       */
-static void disable_lcall(void)
-{
-        struct modify_ldt_ldt_s ldt;
-        int err;
-
-        bzero(&ldt, sizeof(ldt));
-        ldt.entry_number = 7;
-        ldt.base_addr = 0;
-        ldt.limit = 0;
-        err = modify_ldt(1, &ldt, sizeof(ldt));
-        if (err)
-                printk(UM_KERN_ERR "Failed to disable lcall7 - errno = %d\n",
-                       errno);
-}
-#endif
-
 void arch_init_thread(void)
 {
-#if 0
-        disable_lcall();
-#endif
 }
 
 void arch_check_bugs(void)
@@ -209,10 +76,6 @@ int arch_handle_signal(int sig, struct uml_pt_regs *regs)
         else if (host_has_cmov == 1)
                 panic("SIGILL caused by cmov, which this processor claims to "
                       "implement");
-        else if (host_has_cmov == -1)
-                panic("SIGILL caused by cmov, couldn't tell if this processor "
-                      "implements it, boot a filesystem compiled for older "
-                      "processors");
         else panic("Bad value for host_has_cmov (%d)", host_has_cmov);
         return 0;
 }