From: Ingo Molnar <mingo@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
Andy Lutomirski <luto@amacapital.net>,
Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
"H . Peter Anvin" <hpa@zytor.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Oleg Nesterov <oleg@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Rik van Riel <riel@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Yu-cheng Yu <yu-cheng.yu@intel.com>
Subject: [PATCH 14/14] x86/fpu: Flip the parameter order in copy_*_to_xstate()
Date: Thu, 26 Jan 2017 11:22:59 +0100 [thread overview]
Message-ID: <1485426179-13681-15-git-send-email-mingo@kernel.org> (raw)
In-Reply-To: <1485426179-13681-1-git-send-email-mingo@kernel.org>
Make it more consistent with regular memcpy() semantics, where the destination
argument comes first.
No change in functionality.
Cc: Andy Lutomirski <luto@kernel.org>
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: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
arch/x86/include/asm/fpu/xstate.h | 4 ++--
arch/x86/kernel/fpu/regset.c | 4 ++--
arch/x86/kernel/fpu/signal.c | 2 +-
arch/x86/kernel/fpu/xstate.c | 4 ++--
4 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/x86/include/asm/fpu/xstate.h b/arch/x86/include/asm/fpu/xstate.h
index 4ceb90740d80..579ac2358e63 100644
--- a/arch/x86/include/asm/fpu/xstate.h
+++ b/arch/x86/include/asm/fpu/xstate.h
@@ -50,6 +50,6 @@ const void *get_xsave_field_ptr(int xstate_field);
int using_compacted_format(void);
int copy_xstate_to_kernel(void *kbuf, struct xregs_state *xsave, unsigned int offset, unsigned int size);
int copy_xstate_to_user(void __user *ubuf, struct xregs_state *xsave, unsigned int offset, unsigned int size);
-int copy_kernel_to_xstate(const void *kbuf, struct xregs_state *xsave);
-int copy_user_to_xstate(const void __user *ubuf, struct xregs_state *xsave);
+int copy_kernel_to_xstate(struct xregs_state *xsave, const void *kbuf);
+int copy_user_to_xstate(struct xregs_state *xsave, const void __user *ubuf);
#endif
diff --git a/arch/x86/kernel/fpu/regset.c b/arch/x86/kernel/fpu/regset.c
index f0c4a5ec7044..b7f3e45ce15f 100644
--- a/arch/x86/kernel/fpu/regset.c
+++ b/arch/x86/kernel/fpu/regset.c
@@ -135,9 +135,9 @@ int xstateregs_set(struct task_struct *target, const struct user_regset *regset,
if (boot_cpu_has(X86_FEATURE_XSAVES)) {
if (kbuf)
- ret = copy_kernel_to_xstate(kbuf, xsave);
+ ret = copy_kernel_to_xstate(xsave, kbuf);
else
- ret = copy_user_to_xstate(ubuf, xsave);
+ ret = copy_user_to_xstate(xsave, ubuf);
} else {
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, xsave, 0, -1);
}
diff --git a/arch/x86/kernel/fpu/signal.c b/arch/x86/kernel/fpu/signal.c
index 2c685b492fd6..2d682dac35d4 100644
--- a/arch/x86/kernel/fpu/signal.c
+++ b/arch/x86/kernel/fpu/signal.c
@@ -324,7 +324,7 @@ static int __fpu__restore_sig(void __user *buf, void __user *buf_fx, int size)
fpu__drop(fpu);
if (using_compacted_format())
- err = copy_user_to_xstate(buf_fx, &fpu->state.xsave);
+ err = copy_user_to_xstate(&fpu->state.xsave, buf_fx);
else
err = __copy_from_user(&fpu->state.xsave, buf_fx, state_size);
diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
index 1402a5496654..772a069f8fbf 100644
--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c
@@ -1088,7 +1088,7 @@ int copy_xstate_to_user(void __user *ubuf, struct xregs_state *xsave, unsigned i
* there we check the CPU has XSAVES and a whole standard-sized buffer
* exists.
*/
-int copy_kernel_to_xstate(const void *kbuf, struct xregs_state *xsave)
+int copy_kernel_to_xstate(struct xregs_state *xsave, const void *kbuf)
{
unsigned int offset, size;
int i;
@@ -1141,7 +1141,7 @@ int copy_kernel_to_xstate(const void *kbuf, struct xregs_state *xsave)
* there we check the CPU has XSAVES and a whole standard-sized buffer
* exists.
*/
-int copy_user_to_xstate(const void __user *ubuf, struct xregs_state *xsave)
+int copy_user_to_xstate(struct xregs_state *xsave, const void __user *ubuf)
{
unsigned int offset, size;
int i;
--
2.7.4
next prev parent reply other threads:[~2017-01-26 10:24 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-26 10:22 [PATCH 00/14] x86/fpu: Clean up ptrace copying functions Ingo Molnar
2017-01-26 10:22 ` [PATCH 01/14] x86/fpu: Rename copyin_to_xsaves()/copyout_from_xsaves() to copy_user_to_xstate()/copy_xstate_to_user() Ingo Molnar
2017-01-26 10:22 ` [PATCH 02/14] x86/fpu: Split copy_xstate_to_user() into copy_xstate_to_kernel() & copy_xstate_to_user() Ingo Molnar
2017-01-26 10:22 ` [PATCH 03/14] x86/fpu: Remove 'ubuf' parameter from the copy_xstate_to_kernel() APIs Ingo Molnar
2017-01-26 10:22 ` [PATCH 04/14] x86/fpu: Remove 'kbuf' parameter from the copy_xstate_to_user() APIs Ingo Molnar
2017-01-27 10:16 ` Borislav Petkov
2017-01-30 9:57 ` Ingo Molnar
2017-01-30 15:45 ` Borislav Petkov
2017-01-30 17:23 ` Yu-cheng Yu
2017-01-26 10:22 ` [PATCH 05/14] x86/fpu: Clean up parameter order in the copy_xstate_to_*() APIs Ingo Molnar
2017-01-26 10:22 ` [PATCH 06/14] x86/fpu: Clean up the parameter definitions of copy_xstate_to_*() Ingo Molnar
2017-01-26 10:22 ` [PATCH 07/14] x86/fpu: Remove the 'start_pos' parameter from the __copy_xstate_to_*() functions Ingo Molnar
2017-01-26 10:22 ` [PATCH 08/14] x86/fpu: Clarify parameter names in the copy_xstate_to_*() methods Ingo Molnar
2017-01-26 10:22 ` [PATCH 09/14] x86/fpu: Change 'size_total' parameter to unsigned and standardize the size checks in copy_xstate_to_*() Ingo Molnar
2017-01-30 17:11 ` Yu-cheng Yu
2017-01-26 10:22 ` [PATCH 10/14] x86/fpu: Simplify __copy_xstate_to_kernel() return values Ingo Molnar
2017-01-26 10:22 ` [PATCH 11/14] x86/fpu: Split copy_user_to_xstate() into copy_kernel_to_xstate() & copy_user_to_xstate() Ingo Molnar
2017-01-27 10:54 ` Borislav Petkov
2017-01-26 10:22 ` [PATCH 12/14] x86/fpu: Remove 'ubuf' parameter from the copy_kernel_to_xstate() API Ingo Molnar
2017-01-26 10:22 ` [PATCH 13/14] x86/fpu: Remove 'kbuf' parameter from the copy_user_to_xstate() API Ingo Molnar
2017-01-26 10:22 ` Ingo Molnar [this message]
2017-01-26 10:28 ` [PATCH 00/14] x86/fpu: Clean up ptrace copying functions Ingo Molnar
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