Re: Ping: [PATCH v15 00/13] support "task_isolation" mode
From: Francis Giraldeau <hidden>
Date: 2016-09-08 16:21:46
Also in:
lkml
Subsystem:
the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
On 2016-09-07 05:11 PM, Francis Giraldeau wrote:
The syscall test fails on x86:
$ sudo ./isolation
[...]
test_syscall: FAIL (0x100)
test_syscall (SIGUSR1): FAIL (0x100)The fix is indeed very simple:
diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
index 7255367..449e2b5 100644
--- a/arch/x86/include/asm/thread_info.h
+++ b/arch/x86/include/asm/thread_info.h@@ -139,7 +139,7 @@ struct thread_info { #define _TIF_WORK_SYSCALL_ENTRY \ (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_EMU | _TIF_SYSCALL_AUDIT | \ _TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT | \ - _TIF_NOHZ) + _TIF_NOHZ | _TIF_TASK_ISOLATION) /* work to do on any return to user space */ #define _TIF_ALLWORK_MASK \
I updated the branch accordingly: https://github.com/giraldeau/linux/commit/057761af7bde087fa10aa42554a13a7b69071938 Thanks, Francis