diff options
Diffstat (limited to 'debian/patches-rt/0004-x86-fpu-Always-init-the-state-in-fpu__clear.patch')
| -rw-r--r-- | debian/patches-rt/0004-x86-fpu-Always-init-the-state-in-fpu__clear.patch | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/debian/patches-rt/0004-x86-fpu-Always-init-the-state-in-fpu__clear.patch b/debian/patches-rt/0004-x86-fpu-Always-init-the-state-in-fpu__clear.patch deleted file mode 100644 index 3226a450b..000000000 --- a/debian/patches-rt/0004-x86-fpu-Always-init-the-state-in-fpu__clear.patch +++ /dev/null @@ -1,75 +0,0 @@ -From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> -Date: Wed, 17 Oct 2018 15:27:34 +0200 -Subject: [PATCH 04/27] x86/fpu: Always init the `state' in fpu__clear() -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.0/older/patches-5.0.10-rt7.tar.xz - -fpu__clear() only initializes the `state' if the FPU is present. This -initialisation is also required for the FPU-less system and takes place -in math_emulate(). Since fpu__initialize() only performs the -initialization if ->initialized is zero it does not matter that it is -invoked each time an opcode is emulated. It makes the removal of -->initialized easier if the struct is also initialized in the FPU-less -case at the same time. - -Move fpu__initialize() before the FPU check so it is also performed in -the FPU-less case. - -Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> -Reviewed-by: Borislav Petkov <bp@suse.de> ---- - arch/x86/include/asm/fpu/internal.h | 1 - - arch/x86/kernel/fpu/core.c | 5 ++--- - arch/x86/math-emu/fpu_entry.c | 3 --- - 3 files changed, 2 insertions(+), 7 deletions(-) - ---- a/arch/x86/include/asm/fpu/internal.h -+++ b/arch/x86/include/asm/fpu/internal.h -@@ -24,7 +24,6 @@ - /* - * High level FPU state handling functions: - */ --extern void fpu__initialize(struct fpu *fpu); - extern void fpu__prepare_read(struct fpu *fpu); - extern void fpu__prepare_write(struct fpu *fpu); - extern void fpu__save(struct fpu *fpu); ---- a/arch/x86/kernel/fpu/core.c -+++ b/arch/x86/kernel/fpu/core.c -@@ -223,7 +223,7 @@ int fpu__copy(struct fpu *dst_fpu, struc - * Activate the current task's in-memory FPU context, - * if it has not been used before: - */ --void fpu__initialize(struct fpu *fpu) -+static void fpu__initialize(struct fpu *fpu) - { - WARN_ON_FPU(fpu != ¤t->thread.fpu); - -@@ -236,7 +236,6 @@ void fpu__initialize(struct fpu *fpu) - fpu->initialized = 1; - } - } --EXPORT_SYMBOL_GPL(fpu__initialize); - - /* - * This function must be called before we read a task's fpstate. -@@ -365,8 +364,8 @@ void fpu__clear(struct fpu *fpu) - /* - * Make sure fpstate is cleared and initialized. - */ -+ fpu__initialize(fpu); - if (static_cpu_has(X86_FEATURE_FPU)) { -- fpu__initialize(fpu); - user_fpu_begin(); - copy_init_fpstate_to_fpregs(); - } ---- a/arch/x86/math-emu/fpu_entry.c -+++ b/arch/x86/math-emu/fpu_entry.c -@@ -113,9 +113,6 @@ void math_emulate(struct math_emu_info * - unsigned long code_base = 0; - unsigned long code_limit = 0; /* Initialized to stop compiler warnings */ - struct desc_struct code_descriptor; -- struct fpu *fpu = ¤t->thread.fpu; -- -- fpu__initialize(fpu); - - #ifdef RE_ENTRANT_CHECKING - if (emulating) { |