[patch V2 05/52] x86/fpu: Remove unused get_xsave_field_ptr()

Thomas Gleixner
2021-06-14T16:38:10Z

Reviewed-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
---
arch/x86/include/asm/fpu/xstate.h | 1 -
arch/x86/kernel/fpu/xstate.c | 30 ------------------------------
2 files changed, 31 deletions(-)

--- a/arch/x86/include/asm/fpu/xstate.h
+++ b/arch/x86/include/asm/fpu/xstate.h
@@ -101,7 +101,6 @@ extern void __init update_regset_xstate_
u64 xstate_mask);

void *get_xsave_addr(struct xregs_state *xsave, int xfeature_nr);
-const void *get_xsave_field_ptr(int xfeature_nr);
int using_compacted_format(void);
int xfeature_size(int xfeature_nr);
struct membuf;
--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c
@@ -992,36 +992,6 @@ void *get_xsave_addr(struct xregs_state
}
EXPORT_SYMBOL_GPL(get_xsave_addr);

-/*
- * This wraps up the common operations that need to occur when retrieving
- * data from xsave state. It first ensures that the current task was
- * using the FPU and retrieves the data in to a buffer. It then calculates
- * the offset of the requested field in the buffer.
- *
- * This function is safe to call whether the FPU is in use or not.
- *
- * Note that this only works on the current task.
- *
- * Inputs:
- * @xfeature_nr: state which is defined in xsave.h (e.g. XFEATURE_FP,
- * XFEATURE_SSE, etc...)
- * Output:
- * address of the state in the xsave area or NULL if the state
- * is not present or is in its 'init state'.
- */
-const void *get_xsave_field_ptr(int xfeature_nr)
-{
- struct fpu *fpu = &current->thread.fpu;
-
- /*
- * fpu__save() takes the CPU's xstate registers
- * and saves them off to the 'fpu memory buffer.
- */
- fpu__save(fpu);
-
- return get_xsave_addr(&fpu->state.xsave, xfeature_nr);
-}
-
#ifdef CONFIG_ARCH_HAS_PKEYS

/*