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x86/asm/64: Rename thread_struct's fs and gs to fsbase and gsbase

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Unlike ds and es, these are base addresses, not selectors.  Rename
them so their meaning is more obvious.

On x86_32, the field is still called fs.  Fixing that could make sense
as a future cleanup.

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: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/69a18a51c4cba0ce29a241e570fc618ad721d908.1461698311.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Andy Lutomirski
2016-04-26 12:23:29 -07:00
committed by Ingo Molnar
parent 731e33e39a
commit 296f781a4b
5 changed files with 32 additions and 25 deletions
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8
arch/x86/kernel/ptrace.c
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@@ -399,7 +399,7 @@ static int putreg(struct task_struct *child,
* to set either thread.fs or thread.fsindex and the
* corresponding GDT slot.
*/
if (child->thread.fs != value)
if (child->thread.fsbase != value)
return do_arch_prctl(child, ARCH_SET_FS, value);
return 0;
case offsetof(struct user_regs_struct,gs_base):
@@ -408,7 +408,7 @@ static int putreg(struct task_struct *child,
*/
if (value >= TASK_SIZE_OF(child))
return -EIO;
if (child->thread.gs != value)
if (child->thread.gsbase != value)
return do_arch_prctl(child, ARCH_SET_GS, value);
return 0;
#endif
@@ -438,14 +438,14 @@ static unsigned long getreg(struct task_struct *task, unsigned long offset)
* XXX: This will not behave as expected if called on
* current or if fsindex != 0.
*/
return task->thread.fs;
return task->thread.fsbase;
}
case offsetof(struct user_regs_struct, gs_base): {
/*
* XXX: This will not behave as expected if called on
* current or if fsindex != 0.
*/
return task->thread.gs;
return task->thread.gsbase;
}
#endif
}