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Subject[tip: x86/fpu] x86/fpu: Remove internal.h dependency from fpu/signal.h
The following commit has been merged into the x86/fpu branch of tip:

Commit-ID: 0ae67cc34f765078a63137120e4567ad2f050b75
Gitweb: https://git.kernel.org/tip/0ae67cc34f765078a63137120e4567ad2f050b75
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Fri, 15 Oct 2021 03:16:35 +02:00
Committer: Borislav Petkov <bp@suse.de>
CommitterDate: Wed, 20 Oct 2021 15:27:29 +02:00

x86/fpu: Remove internal.h dependency from fpu/signal.h

In order to remove internal.h make signal.h independent of it.

Include asm/fpu/xstate.h to fix a missing update_regset_xstate_info()
prototype, which is
Reported-by: kernel test robot <lkp@intel.com>

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211015011539.844565975@linutronix.de
---
arch/x86/ia32/ia32_signal.c | 1 -
arch/x86/include/asm/fpu/api.h | 3 +++
arch/x86/include/asm/fpu/internal.h | 7 -------
arch/x86/include/asm/fpu/signal.h | 13 +++++++++++++
arch/x86/kernel/fpu/signal.c | 1 -
arch/x86/kernel/ptrace.c | 2 +-
arch/x86/kernel/signal.c | 1 -
arch/x86/mm/extable.c | 3 ++-
8 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c
index 828ab0a..c9c3859 100644
--- a/arch/x86/ia32/ia32_signal.c
+++ b/arch/x86/ia32/ia32_signal.c
@@ -24,7 +24,6 @@
#include <linux/syscalls.h>
#include <asm/ucontext.h>
#include <linux/uaccess.h>
-#include <asm/fpu/internal.h>
#include <asm/fpu/signal.h>
#include <asm/ptrace.h>
#include <asm/ia32_unistd.h>
diff --git a/arch/x86/include/asm/fpu/api.h b/arch/x86/include/asm/fpu/api.h
index 56cf884..17893af 100644
--- a/arch/x86/include/asm/fpu/api.h
+++ b/arch/x86/include/asm/fpu/api.h
@@ -116,6 +116,9 @@ extern void fpstate_init_soft(struct swregs_state *soft);
static inline void fpstate_init_soft(struct swregs_state *soft) {}
#endif

+/* State tracking */
+DECLARE_PER_CPU(struct fpu *, fpu_fpregs_owner_ctx);
+
/* fpstate */
extern union fpregs_state init_fpstate;

diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h
index d8bb491..8f97d3e 100644
--- a/arch/x86/include/asm/fpu/internal.h
+++ b/arch/x86/include/asm/fpu/internal.h
@@ -26,7 +26,6 @@
/*
* High level FPU state handling functions:
*/
-extern bool fpu__restore_sig(void __user *buf, int ia32_frame);
extern void fpu__clear_user_states(struct fpu *fpu);
extern int fpu__exception_code(struct fpu *fpu, int trap_nr);

@@ -42,10 +41,4 @@ extern void fpu__init_system(struct cpuinfo_x86 *c);
extern void fpu__init_check_bugs(void);
extern void fpu__resume_cpu(void);

-extern void restore_fpregs_from_fpstate(union fpregs_state *fpstate, u64 mask);
-
-extern bool copy_fpstate_to_sigframe(void __user *buf, void __user *fp, int size);
-
-DECLARE_PER_CPU(struct fpu *, fpu_fpregs_owner_ctx);
-
#endif /* _ASM_X86_FPU_INTERNAL_H */
diff --git a/arch/x86/include/asm/fpu/signal.h b/arch/x86/include/asm/fpu/signal.h
index 04868a7..9a63a21 100644
--- a/arch/x86/include/asm/fpu/signal.h
+++ b/arch/x86/include/asm/fpu/signal.h
@@ -5,6 +5,11 @@
#ifndef _ASM_X86_FPU_SIGNAL_H
#define _ASM_X86_FPU_SIGNAL_H

+#include <linux/compat.h>
+#include <linux/user.h>
+
+#include <asm/fpu/types.h>
+
#ifdef CONFIG_X86_64
# include <uapi/asm/sigcontext.h>
# include <asm/user32.h>
@@ -31,4 +36,12 @@ fpu__alloc_mathframe(unsigned long sp, int ia32_frame,

unsigned long fpu__get_fpstate_size(void);

+extern bool copy_fpstate_to_sigframe(void __user *buf, void __user *fp, int size);
+extern void fpu__clear_user_states(struct fpu *fpu);
+extern bool fpu__restore_sig(void __user *buf, int ia32_frame);
+
+extern void restore_fpregs_from_fpstate(union fpregs_state *fpstate, u64 mask);
+
+extern bool copy_fpstate_to_sigframe(void __user *buf, void __user *fp, int size);
+
#endif /* _ASM_X86_FPU_SIGNAL_H */
diff --git a/arch/x86/kernel/fpu/signal.c b/arch/x86/kernel/fpu/signal.c
index 32dbcde..274cd58 100644
--- a/arch/x86/kernel/fpu/signal.c
+++ b/arch/x86/kernel/fpu/signal.c
@@ -7,7 +7,6 @@
#include <linux/cpu.h>
#include <linux/pagemap.h>

-#include <asm/fpu/internal.h>
#include <asm/fpu/signal.h>
#include <asm/fpu/regset.h>
#include <asm/fpu/xstate.h>
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 4c208ea..6d2244c 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -29,9 +29,9 @@

#include <linux/uaccess.h>
#include <asm/processor.h>
-#include <asm/fpu/internal.h>
#include <asm/fpu/signal.h>
#include <asm/fpu/regset.h>
+#include <asm/fpu/xstate.h>
#include <asm/debugreg.h>
#include <asm/ldt.h>
#include <asm/desc.h>
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index 02ee68e..58bd070 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -30,7 +30,6 @@

#include <asm/processor.h>
#include <asm/ucontext.h>
-#include <asm/fpu/internal.h>
#include <asm/fpu/signal.h>
#include <asm/vdso.h>
#include <asm/mce.h>
diff --git a/arch/x86/mm/extable.c b/arch/x86/mm/extable.c
index 043ec38..79c2e30 100644
--- a/arch/x86/mm/extable.c
+++ b/arch/x86/mm/extable.c
@@ -4,7 +4,8 @@
#include <linux/sched/debug.h>
#include <xen/xen.h>

-#include <asm/fpu/internal.h>
+#include <asm/fpu/signal.h>
+#include <asm/fpu/xstate.h>
#include <asm/sev.h>
#include <asm/traps.h>
#include <asm/kdebug.h>
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