Messages in this thread Patch in this message | | | Date | Thu, 22 Mar 2012 14:38:52 -0700 | From | "H. Peter Anvin" <> | Subject | [GIT PULL] Additional x86 fixes for v3.4-rc1 |
| |
Hi Linus,
The following changes since commit 28f23d1f3b6a6078312b6e9585e583cc7326fe22:
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (2012-03-22 09:44:50 -0700)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-urgent-for-linus
The head of this tree is 29a2e2836ff9ea65a603c89df217f4198973a74f.
--------------------
In order, these patches:
1. addresses a long-standing related when a kernel-spawned process gets a signal on an i386 kernel compiled without CONFIG_VM86.
2. fixes the newly introduced build warning in arch/x86/boot.
3. fixes a typo in the i386 system call table which affects building some libcs.
--------------------
Dmitry Adamushko (1): x86-32: Fix endless loop when processing signals for kernel tasks
H. Peter Anvin (1): x86, boot: Correct CFLAGS for hostprogs
Thierry Reding (1): x86-32: Fix typo for mq_getsetattr in syscall table
arch/x86/boot/Makefile | 6 +++--- arch/x86/kernel/entry_32.S | 17 ++++++++++------- arch/x86/syscalls/syscall_32.tbl | 2 +- 3 files changed, 14 insertions(+), 11 deletions(-)
diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile index 3e02148..5a747dd 100644 --- a/arch/x86/boot/Makefile +++ b/arch/x86/boot/Makefile @@ -37,9 +37,9 @@ setup-y += video-bios.o targets += $(setup-y) hostprogs-y := mkcpustr tools/build -HOSTCFLAGS_mkcpustr.o := -I$(srctree)/arch/$(SRCARCH)/include -HOST_EXTRACFLAGS += -I$(objtree)/include -I$(srctree)/tools/include \ - -include $(srctree)/include/linux/kconfig.h +HOST_EXTRACFLAGS += -I$(srctree)/tools/include $(LINUXINCLUDE) \ + -D__EXPORTED_HEADERS__ + $(obj)/cpu.o: $(obj)/cpustr.h quiet_cmd_cpustr = CPUSTR $@ diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index 79d97e6..7b784f4 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -98,12 +98,6 @@ #endif .endm -#ifdef CONFIG_VM86 -#define resume_userspace_sig check_userspace -#else -#define resume_userspace_sig resume_userspace -#endif - /* * User gs save/restore * @@ -327,10 +321,19 @@ ret_from_exception: preempt_stop(CLBR_ANY) ret_from_intr: GET_THREAD_INFO(%ebp) -check_userspace: +resume_userspace_sig: +#ifdef CONFIG_VM86 movl PT_EFLAGS(%esp), %eax # mix EFLAGS and CS movb PT_CS(%esp), %al andl $(X86_EFLAGS_VM | SEGMENT_RPL_MASK), %eax +#else + /* + * We can be coming here from a syscall done in the kernel space, + * e.g. a failed kernel_execve(). + */ + movl PT_CS(%esp), %eax + andl $SEGMENT_RPL_MASK, %eax +#endif cmpl $USER_RPL, %eax jb resume_kernel # not returning to v8086 or userspace diff --git a/arch/x86/syscalls/syscall_32.tbl b/arch/x86/syscalls/syscall_32.tbl index ce98e28..e7e67cc 100644 --- a/arch/x86/syscalls/syscall_32.tbl +++ b/arch/x86/syscalls/syscall_32.tbl @@ -288,7 +288,7 @@ 279 i386 mq_timedsend sys_mq_timedsend compat_sys_mq_timedsend 280 i386 mq_timedreceive sys_mq_timedreceive compat_sys_mq_timedreceive 281 i386 mq_notify sys_mq_notify compat_sys_mq_notify -282 i386 mq_getsetaddr sys_mq_getsetattr compat_sys_mq_getsetattr +282 i386 mq_getsetattr sys_mq_getsetattr compat_sys_mq_getsetattr 283 i386 kexec_load sys_kexec_load compat_sys_kexec_load 284 i386 waitid sys_waitid compat_sys_waitid # 285 sys_setaltroot
| |