x86/entry: Remap the TSS into the CPU entry area
authorAndy Lutomirski <luto@kernel.org>
Mon, 4 Dec 2017 14:07:20 +0000 (15:07 +0100)
committerIngo Molnar <mingo@kernel.org>
Sun, 17 Dec 2017 12:59:56 +0000 (13:59 +0100)
commit72f5e08dbba2d01aa90b592cf76c378ea233b00b
tree6289081b74696a9562d06b50e823d6ef1430f66b
parent1a935bc3d4ea61556461a9e92a68ca3556232efd
x86/entry: Remap the TSS into the CPU entry area

This has a secondary purpose: it puts the entry stack into a region
with a well-controlled layout.  A subsequent patch will take
advantage of this to streamline the SYSCALL entry code to be able to
find it more easily.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bpetkov@suse.de>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Laight <David.Laight@aculab.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Eduardo Valentin <eduval@amazon.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: aliguori@amazon.com
Cc: daniel.gruss@iaik.tugraz.at
Cc: hughd@google.com
Cc: keescook@google.com
Link: https://lkml.kernel.org/r/20171204150605.962042855@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/entry/entry_32.S
arch/x86/include/asm/fixmap.h
arch/x86/kernel/asm-offsets.c
arch/x86/kernel/cpu/common.c
arch/x86/kernel/dumpstack.c
arch/x86/kvm/vmx.c
arch/x86/power/cpu.c