diff options
| author | Joerg Roedel <jroedel@suse.de> | 2018-07-18 11:40:51 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-07-20 01:11:40 +0200 |
| commit | 252e1a0526304f0f3f6888fc09e81cb220f957f3 (patch) | |
| tree | 5c9c0928cc3e6c02a2b48324cd4fc733fc1faa3a /arch/x86/include/asm/switch_to.h | |
| parent | b65bef400689ceee7108c2d47fb97ae91f4d1440 (diff) | |
| download | linux-0-day-252e1a0526304f0f3f6888fc09e81cb220f957f3.tar.gz linux-0-day-252e1a0526304f0f3f6888fc09e81cb220f957f3.tar.xz | |
x86/entry: Rename update_sp0 to update_task_stack
The function does not update sp0 anymore but updates makes the task-stack
visible for entry code. This is by either writing it to sp1 or by doing a
hypercall. Rename the function to get rid of the misleading name.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Pavel Machek <pavel@ucw.cz>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: linux-mm@kvack.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Brian Gerst <brgerst@gmail.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: Will Deacon <will.deacon@arm.com>
Cc: aliguori@amazon.com
Cc: daniel.gruss@iaik.tugraz.at
Cc: hughd@google.com
Cc: keescook@google.com
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Waiman Long <llong@redhat.com>
Cc: "David H . Gutteridge" <dhgutteridge@sympatico.ca>
Cc: joro@8bytes.org
Link: https://lkml.kernel.org/r/1531906876-13451-15-git-send-email-joro@8bytes.org
Diffstat (limited to 'arch/x86/include/asm/switch_to.h')
| -rw-r--r-- | arch/x86/include/asm/switch_to.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/switch_to.h b/arch/x86/include/asm/switch_to.h index 8bc2f70b452ec..36bd243843d6d 100644 --- a/arch/x86/include/asm/switch_to.h +++ b/arch/x86/include/asm/switch_to.h @@ -87,7 +87,7 @@ static inline void refresh_sysenter_cs(struct thread_struct *thread) #endif /* This is used when switching tasks or entering/exiting vm86 mode. */ -static inline void update_sp0(struct task_struct *task) +static inline void update_task_stack(struct task_struct *task) { /* sp0 always points to the entry trampoline stack, which is constant: */ #ifdef CONFIG_X86_32 |