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linux/arch/x86/entry
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Thomas Gleixner 020c755fdb x86/mce: Make machine check speculation protected 
commit 6f41c34d69 upstream.

The machine check idtentry uses an indirect branch directly from the low
level code. This evades the speculation protection.

Replace it by a direct call into C code and issue the indirect call there
so the compiler can apply the proper speculation protection.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by:Borislav Petkov <bp@alien8.de>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Niced-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801181626290.1847@nanos
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2018-01-23 19:58:20 +01:00
..
syscalls x86/build: Beautify build log of syscall headers 2017-12-25 14:26:16 +01:00
vdso License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vsyscall x86/pti: Map the vsyscall page if needed 2018-01-02 20:31:00 +01:00
calling.h x86/pti: Fix !PCID and sanitize defines 2018-01-17 09:45:30 +01:00
common.c x86/syscalls: Check address limit on user-mode return 2017-07-08 14:05:32 +02:00
entry_32.S x86/retpoline: Fill RSB on context switch for affected CPUs 2018-01-23 19:58:13 +01:00
entry_64.S x86/mce: Make machine check speculation protected 2018-01-23 19:58:20 +01:00
entry_64_compat.S x86/pti: Switch to kernel CR3 at early in entry_SYSCALL_compat() 2018-01-05 15:48:58 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
syscall_32.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
syscall_64.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
thunk_32.S x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00
thunk_64.S x86: move exports to actual definitions 2016-08-07 23:47:15 -04:00