diff options
Diffstat (limited to 'debian/patches/30_fs_gs.patch')
| -rw-r--r-- | debian/patches/30_fs_gs.patch | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/debian/patches/30_fs_gs.patch b/debian/patches/30_fs_gs.patch new file mode 100644 index 0000000..54aa97c --- /dev/null +++ b/debian/patches/30_fs_gs.patch @@ -0,0 +1,223 @@ +Fix old gs reloading bug after context switch. + +Index: i386/i386/db_interface.c +=================================================================== +RCS file: /cvsroot/hurd/gnumach/i386/i386/Attic/db_interface.c,v +retrieving revision 1.2.2.3.2.1 +diff -u -p -r1.2.2.3.2.1 db_interface.c +--- i386/i386/db_interface.c 7 Jul 2007 17:21:19 -0000 1.2.2.3.2.1 ++++ i386/i386/db_interface.c 8 Jul 2007 21:30:21 -0000 +@@ -187,8 +187,6 @@ kdb_trap( + * instead of those at its call to KDB. + */ + struct int_regs { +- int gs; +- int fs; + int edi; + int esi; + int ebp; +@@ -227,8 +225,8 @@ kdb_kentry( + ddb_regs.edi = int_regs->edi; + ddb_regs.ds = is->ds; + ddb_regs.es = is->es; +- ddb_regs.fs = int_regs->fs; +- ddb_regs.gs = int_regs->gs; ++ ddb_regs.fs = is->fs; ++ ddb_regs.gs = is->gs; + + cnpollc(TRUE); + db_task_trap(-1, 0, (ddb_regs.cs & 0x3) != 0); +@@ -250,8 +248,8 @@ kdb_kentry( + int_regs->edi = ddb_regs.edi; + is->ds = ddb_regs.ds & 0xffff; + is->es = ddb_regs.es & 0xffff; +- int_regs->fs = ddb_regs.fs & 0xffff; +- int_regs->gs = ddb_regs.gs & 0xffff; ++ is->fs = ddb_regs.fs & 0xffff; ++ is->gs = ddb_regs.gs & 0xffff; + } + #if NCPUS > 1 + db_leave(); +Index: i386/i386/kttd_interface.c +=================================================================== +RCS file: /cvsroot/hurd/gnumach/i386/i386/Attic/kttd_interface.c,v +retrieving revision 1.2.2.3.2.1 +diff -u -p -r1.2.2.3.2.1 kttd_interface.c +--- i386/i386/kttd_interface.c 7 Jul 2007 17:21:19 -0000 1.2.2.3.2.1 ++++ i386/i386/kttd_interface.c 8 Jul 2007 21:30:21 -0000 +@@ -491,8 +491,6 @@ boolean_t kttd_trap(int type, int code, + * instead of those at its call to KDB. + */ + struct int_regs { +- int gs; +- int fs; + int edi; + int esi; + int ebp; +@@ -541,8 +539,8 @@ kttd_netentry(int_regs) + kttd_regs.edi = int_regs->edi; + kttd_regs.ds = is->ds; + kttd_regs.es = is->es; +- kttd_regs.fs = int_regs->fs; +- kttd_regs.gs = int_regs->gs; ++ kttd_regs.fs = is->fs; ++ kttd_regs.gs = is->gs; + + kttd_active++; + kttd_task_trap(-1, 0, (kttd_regs.cs & 0x3) != 0); +@@ -564,8 +562,8 @@ kttd_netentry(int_regs) + int_regs->edi = kttd_regs.edi; + is->ds = kttd_regs.ds & 0xffff; + is->es = kttd_regs.es & 0xffff; +- int_regs->fs = kttd_regs.fs & 0xffff; +- int_regs->gs = kttd_regs.gs & 0xffff; ++ is->fs = kttd_regs.fs & 0xffff; ++ is->gs = kttd_regs.gs & 0xffff; + + if (kttd_run_status == RUNNING) + printf("kttd_netentry: %%%%% run_status already RUNNING! %%%%%\n"); +Index: i386/i386/locore.S +=================================================================== +RCS file: /cvsroot/hurd/gnumach/i386/i386/locore.S,v +retrieving revision 1.6.2.7.2.3 +diff -u -p -r1.6.2.7.2.3 locore.S +--- i386/i386/locore.S 7 May 2007 22:54:50 -0000 1.6.2.7.2.3 ++++ i386/i386/locore.S 8 Jul 2007 21:30:21 -0000 +@@ -646,9 +646,13 @@ ENTRY(all_intrs) + + pushl %ds /* save segment registers */ + pushl %es ++ pushl %fs ++ pushl %gs + mov %ss,%dx /* switch to kernel segments */ + mov %dx,%ds + mov %dx,%es ++ mov %dx,%fs ++ mov %dx,%gs + + CPU_NUMBER(%edx) + +@@ -686,7 +690,9 @@ LEXT(return_to_iret) /* ( label for kd + cmpl $0,CX(EXT(need_ast),%edx) + jnz ast_from_interrupt /* take it if so */ + 1: +- pop %es /* restore segment regs */ ++ pop %gs /* restore segment regs */ ++ pop %fs ++ pop %es + pop %ds + pop %edx + pop %ecx +@@ -704,11 +710,13 @@ _return_to_iret_i: /* ( label for kdb_ + /* + * Take an AST from an interrupt. + * On PCB stack. +- * sp-> es -> edx +- * ds -> ecx +- * edx -> eax +- * ecx -> trapno +- * eax -> code ++ * sp-> gs -> edx ++ * fs -> ecx ++ * es -> eax ++ * ds -> trapno ++ * edx -> code ++ * ecx ++ * eax + * eip + * cs + * efl +@@ -716,7 +724,9 @@ _return_to_iret_i: /* ( label for kdb_ + * ss + */ + ast_from_interrupt: +- pop %es /* restore all registers ... */ ++ pop %gs /* restore all registers ... */ ++ pop %fs ++ pop %es + pop %ds + popl %edx + popl %ecx +@@ -731,6 +741,8 @@ ast_from_interrupt: + mov %ss,%dx /* switch to kernel segments */ + mov %dx,%ds + mov %dx,%es ++ mov %dx,%fs ++ mov %dx,%gs + + CPU_NUMBER(%edx) + TIME_TRAP_UENTRY +@@ -768,7 +780,9 @@ ast_from_interrupt: + * pointer to save area on old stack + * [ saved %ebx, if accurate timing ] + * +- * old stack: saved %es ++ * old stack: saved %gs ++ * saved %fs ++ * saved %es + * saved %ds + * saved %edx + * saved %ecx +@@ -820,14 +834,10 @@ kdb_from_iret: + pushl %ebp + pushl %esi + pushl %edi +- push %fs +- push %gs + pushl %esp /* pass regs */ + call EXT(kdb_kentry) /* to kdb */ + addl $4,%esp /* pop parameters */ +- pop %gs /* restore registers */ +- pop %fs +- popl %edi ++ popl %edi /* restore registers */ + popl %esi + popl %ebp + #if STAT_TIME +@@ -906,14 +916,10 @@ ttd_from_iret: + pushl %ebp + pushl %esi + pushl %edi +- push %fs +- push %gs + pushl %esp /* pass regs */ + call _kttd_netentry /* to kdb */ + addl $4,%esp /* pop parameters */ +- pop %gs /* restore registers */ +- pop %fs +- popl %edi ++ popl %edi /* restore registers */ + popl %esi + popl %ebp + #if STAT_TIME +Index: i386/i386/thread.h +=================================================================== +RCS file: /cvsroot/hurd/gnumach/i386/i386/thread.h,v +retrieving revision 1.3.2.1.2.1 +diff -u -p -r1.3.2.1.2.1 thread.h +--- i386/i386/thread.h 7 May 2007 22:54:50 -0000 1.3.2.1.2.1 ++++ i386/i386/thread.h 8 Jul 2007 21:30:21 -0000 +@@ -139,6 +139,8 @@ struct v86_assist_state { + */ + + struct i386_interrupt_state { ++ int gs; ++ int fs; + int es; + int ds; + int edx; +Index: linux/src/include/asm-i386/irq.h +=================================================================== +RCS file: /cvsroot/hurd/gnumach/linux/src/include/asm-i386/Attic/irq.h,v +retrieving revision 1.1 +diff -u -p -r1.1 irq.h +--- linux/src/include/asm-i386/irq.h 26 Apr 1999 05:55:48 -0000 1.1 ++++ linux/src/include/asm-i386/irq.h 8 Jul 2007 21:30:21 -0000 +@@ -38,6 +38,7 @@ extern void enable_irq(unsigned int); + "movl $" STR(KERNEL_DS) ",%edx\n\t" \ + "mov %dx,%ds\n\t" \ + "mov %dx,%es\n\t" \ ++ "mov %dx,%gs\n\t" \ + "movl $" STR(USER_DS) ",%edx\n\t" \ + "mov %dx,%fs\n\t" \ + "movl $0,%edx\n\t" \ |