diff options
author | Ingo Molnar <mingo@kernel.org> | 2015-04-28 11:56:54 +0300 |
---|---|---|
committer | Ingo Molnar <mingo@kernel.org> | 2015-05-19 16:48:00 +0300 |
commit | befc61ad3c097bb6ace3da0c73ad56272ccee02d (patch) | |
tree | bba889d09f28fdc3102b465b729a58a45506416b | |
parent | 57dd083e0cd0bb1ce447941b6438bf0a8372fc19 (diff) | |
download | linux-befc61ad3c097bb6ace3da0c73ad56272ccee02d.tar.xz |
x86/fpu: Move asm/xcr.h to asm/fpu/internal.h
Now that all FPU internals using drivers are converted to public APIs,
move xcr.h's definitions into fpu/internal.h and remove xcr.h.
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r-- | arch/x86/include/asm/fpu/internal.h | 25 | ||||
-rw-r--r-- | arch/x86/include/asm/xcr.h | 49 | ||||
-rw-r--r-- | arch/x86/kernel/fpu/xstate.c | 1 | ||||
-rw-r--r-- | arch/x86/kvm/vmx.c | 1 | ||||
-rw-r--r-- | arch/x86/kvm/x86.c | 1 |
5 files changed, 25 insertions, 52 deletions
diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h index 8ec785ecce81..161b51bf267e 100644 --- a/arch/x86/include/asm/fpu/internal.h +++ b/arch/x86/include/asm/fpu/internal.h @@ -431,6 +431,31 @@ static inline void fpu_reset_state(struct fpu *fpu) } /* + * Definitions for the eXtended Control Register instructions + */ + +#define XCR_XFEATURE_ENABLED_MASK 0x00000000 + +static inline u64 xgetbv(u32 index) +{ + u32 eax, edx; + + asm volatile(".byte 0x0f,0x01,0xd0" /* xgetbv */ + : "=a" (eax), "=d" (edx) + : "c" (index)); + return eax + ((u64)edx << 32); +} + +static inline void xsetbv(u32 index, u64 value) +{ + u32 eax = value; + u32 edx = value >> 32; + + asm volatile(".byte 0x0f,0x01,0xd1" /* xsetbv */ + : : "a" (eax), "d" (edx), "c" (index)); +} + +/* * FPU state switching for scheduling. * * This is a two-stage process: diff --git a/arch/x86/include/asm/xcr.h b/arch/x86/include/asm/xcr.h deleted file mode 100644 index f2cba4e79a23..000000000000 --- a/arch/x86/include/asm/xcr.h +++ /dev/null @@ -1,49 +0,0 @@ -/* -*- linux-c -*- ------------------------------------------------------- * - * - * Copyright 2008 rPath, Inc. - All Rights Reserved - * - * This file is part of the Linux kernel, and is made available under - * the terms of the GNU General Public License version 2 or (at your - * option) any later version; incorporated herein by reference. - * - * ----------------------------------------------------------------------- */ - -/* - * asm-x86/xcr.h - * - * Definitions for the eXtended Control Register instructions - */ - -#ifndef _ASM_X86_XCR_H -#define _ASM_X86_XCR_H - -#define XCR_XFEATURE_ENABLED_MASK 0x00000000 - -#ifdef __KERNEL__ -# ifndef __ASSEMBLY__ - -#include <linux/types.h> - -static inline u64 xgetbv(u32 index) -{ - u32 eax, edx; - - asm volatile(".byte 0x0f,0x01,0xd0" /* xgetbv */ - : "=a" (eax), "=d" (edx) - : "c" (index)); - return eax + ((u64)edx << 32); -} - -static inline void xsetbv(u32 index, u64 value) -{ - u32 eax = value; - u32 edx = value >> 32; - - asm volatile(".byte 0x0f,0x01,0xd1" /* xsetbv */ - : : "a" (eax), "d" (edx), "c" (index)); -} - -# endif /* __ASSEMBLY__ */ -#endif /* __KERNEL__ */ - -#endif /* _ASM_X86_XCR_H */ diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c index 0f849229c93b..c087f2d0f2d1 100644 --- a/arch/x86/kernel/fpu/xstate.c +++ b/arch/x86/kernel/fpu/xstate.c @@ -9,7 +9,6 @@ #include <asm/fpu/internal.h> #include <asm/sigframe.h> #include <asm/tlbflush.h> -#include <asm/xcr.h> static const char *xfeature_names[] = { diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index f93ae71416e4..2de55e953842 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -41,7 +41,6 @@ #include <asm/virtext.h> #include <asm/mce.h> #include <asm/fpu/internal.h> -#include <asm/xcr.h> #include <asm/perf_event.h> #include <asm/debugreg.h> #include <asm/kexec.h> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 9ff4df77e069..5c61aae277f9 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -61,7 +61,6 @@ #include <asm/mce.h> #include <linux/kernel_stat.h> #include <asm/fpu/internal.h> /* Ugh! */ -#include <asm/xcr.h> #include <asm/pvclock.h> #include <asm/div64.h> |