X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fx86%2Fmm%2Ffault_64.c;h=dd26e680a43166ca9abe0ced6390989edddf4349;hb=3c1df68b848b39270752ff8d4b956cc4a4dce0f6;hp=75b7b165bdf337b5a85562d7d21297c992837e67;hpb=fdfe8aa84dd78cfdff427d0520f5974fb5e9c220;p=linux-2.6

diff --git a/arch/x86/mm/fault_64.c b/arch/x86/mm/fault_64.c
index 75b7b165bd..dd26e680a4 100644
--- a/arch/x86/mm/fault_64.c
+++ b/arch/x86/mm/fault_64.c
@@ -514,6 +514,17 @@ good_area:
 		tsk->maj_flt++;
 	else
 		tsk->min_flt++;
+
+#ifdef CONFIG_X86_32
+	/*
+	 * Did it hit the DOS screen memory VA from vm86 mode?
+	 */
+	if (v8086_mode(regs)) {
+		unsigned long bit = (address - 0xA0000) >> PAGE_SHIFT;
+		if (bit < 32)
+			tsk->thread.screen_bitmap |= 1 << bit;
+	}
+#endif
 	up_read(&mm->mmap_sem);
 	return;
 
@@ -550,13 +561,15 @@ bad_area_nosemaphore:
 		    printk_ratelimit()) {
 			printk(
 #ifdef CONFIG_X86_32
-			"%s%s[%d]: segfault at %08lx ip %08lx sp %08lx error %lx\n",
+			"%s%s[%d]: segfault at %lx ip %08lx sp %08lx error %lx",
 #else
-			"%s%s[%d]: segfault at %lx ip %lx sp %lx error %lx\n",
+			"%s%s[%d]: segfault at %lx ip %lx sp %lx error %lx",
 #endif
 			task_pid_nr(tsk) > 1 ? KERN_INFO : KERN_EMERG,
 			tsk->comm, task_pid_nr(tsk), address, regs->ip,
 			regs->sp, error_code);
+			print_vma_addr(" in ", regs->ip);
+			printk("\n");
 		}
 
 		tsk->thread.cr2 = address;
@@ -595,7 +608,7 @@ no_context:
 	else
 		printk(KERN_ALERT "Unable to handle kernel paging request");
 	printk(" at %016lx RIP: \n" KERN_ALERT, address);
-	printk_address(regs->ip, regs->bp);
+	printk_address(regs->ip, 1);
 	dump_pagetable(address);
 	tsk->thread.cr2 = address;
 	tsk->thread.trap_no = 14;