write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/arch/x86/math-emu/fpu_entry.c
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@@ -113,9 +113,6 @@
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 	unsigned long code_base = 0;
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 	unsigned long code_limit = 0;	/* Initialized to stop compiler warnings */
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 	struct desc_struct code_descriptor;
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-	struct fpu *fpu = &current->thread.fpu;
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-
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-	fpu__initialize(fpu);
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 #ifdef RE_ENTRANT_CHECKING
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 	if (emulating) {
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@@ -692,12 +689,10 @@
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 int fpregs_soft_get(struct task_struct *target,
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 		    const struct user_regset *regset,
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-		    unsigned int pos, unsigned int count,
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-		    void *kbuf, void __user *ubuf)
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+		    struct membuf to)
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 {
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 	struct swregs_state *s387 = &target->thread.fpu.state.soft;
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 	const void *space = s387->st_space;
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-	int ret;
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 	int offset = (S387->ftop & 7) * 10, other = 80 - offset;
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 	RE_ENTRANT_CHECK_OFF;
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@@ -712,18 +707,11 @@
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 	S387->fos |= 0xffff0000;
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 #endif /* PECULIAR_486 */
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-	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, s387, 0,
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-				  offsetof(struct swregs_state, st_space));
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-
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-	/* Copy all registers in stack order. */
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-	if (!ret)
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-		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
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-					  space + offset, 0, other);
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-	if (!ret)
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-		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
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-					  space, 0, offset);
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+	membuf_write(&to, s387, offsetof(struct swregs_state, st_space));
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+	membuf_write(&to, space + offset, other);
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+	membuf_write(&to, space, offset);
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 	RE_ENTRANT_CHECK_ON;
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-	return ret;
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+	return 0;
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 }