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| author |   Andy Lutomirski <luto@kernel.org> | 2016-01-11 17:23:32 -0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-01-12 11:09:26 +0100 |
| commit | 0f672809f91abd0aee01624ccad9199a62e3da7a (patch) | |
| tree | aff0317691267b2a5bf06172edd0c1029c105bc5 /.mailmap | |
| parent | x86/mm/pat: Make split_page_count() check for empty levels to fix /proc/meminfo output (diff) | |
| download | linux-dev-0f672809f91abd0aee01624ccad9199a62e3da7a.tar.xz linux-dev-0f672809f91abd0aee01624ccad9199a62e3da7a.zip | |
selftests/x86: Disable the ldt_gdt_64 test for now
ldt_gdt.c relies on cross-cpu invalidation of SS to do one of
its tests. On 32-bit builds, this works fine, but on 64-bit
builds, it only works if the kernel has proper SS sigcontext
handling for 64-bit user programs.
Since the SS fixes are currently reverted, restrict the test
case to 32 bits for now.
In principle, I could change the test to use a different segment
register, but it would be messy: CS can't point to the LDT for
64-bit code, and the other registers don't result in immediate
faults because they aren't reloaded on kernel -> user
transitions.
When we fix sigcontext (in 4.6?), we can revert this.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/231591d9122d282402d8f53175134f8db5b3bc73.1452561752.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to '.mailmap')
0 files changed, 0 insertions, 0 deletions