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* Fix sparse warning from TDX use of movdir64b()

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Merge tag 'x86_tdx_for_6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 tdx update from Dave Hansen:

 - Fix sparse warning from TDX use of movdir64b()

* tag 'x86_tdx_for_6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/asm: Remove the __iomem annotation of movdir64b()'s dst argument
This commit is contained in:
Linus Torvalds 2024-03-11 20:20:36 -07:00
commit 855684c7d9
2 changed files with 8 additions and 3 deletions
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2
arch/x86/include/asm/io.h
View file

@ -379,7 +379,7 @@ static inline void iosubmit_cmds512(void __iomem *dst, const void *src,
const u8 *end = from + count * 64;
while (from < end) {
movdir64b(dst, from);
movdir64b_io(dst, from);
from += 64;
}
}

9
arch/x86/include/asm/special_insns.h
View file

@ -224,10 +224,10 @@ static inline void serialize(void)
}
/* The dst parameter must be 64-bytes aligned */
static inline void movdir64b(void __iomem *dst, const void *src)
static inline void movdir64b(void *dst, const void *src)
{
const struct { char _[64]; } *__src = src;
struct { char _[64]; } __iomem *__dst = dst;
struct { char _[64]; } *__dst = dst;
/*
* MOVDIR64B %(rdx), rax.
@ -245,6 +245,11 @@ static inline void movdir64b(void __iomem *dst, const void *src)
: "m" (*__src), "a" (__dst), "d" (__src));
}
static inline void movdir64b_io(void __iomem *dst, const void *src)
{
movdir64b((void __force *)dst, src);
}
/**
* enqcmds - Enqueue a command in supervisor (CPL0) mode
* @dst: destination, in MMIO space (must be 512-bit aligned)