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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2018-03-12 13:02:43 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-03-12 11:49:24 +0100 |
| commit | 7beebaccd5083d61e975acb581bd528b9326e7c4 (patch) | |
| tree | 4a17c5059fa6911392237317aef8261bceb9f6f6 /kernel/task_work.c | |
| parent | a5b162b2ecb013ed517ab5ce90079117ada743f4 (diff) | |
| download | linux-7beebaccd5083d61e975acb581bd528b9326e7c4.tar.bz2 | |
x86/boot/compressed/64: Make sure we have a 32-bit code segment
When kernel starts in 64-bit mode we inherit the GDT from the bootloader.
It may cause a problem if the GDT doesn't have a 32-bit code segment
where we expect it to be.
Load our own GDT with known segments.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/20180312100246.89175-2-kirill.shutemov@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/task_work.c')
0 files changed, 0 insertions, 0 deletions