From: Alexey Dobriyan <adobriyan@gmail.com>
To: kirill.shutemov@linux.intel.com
Cc: linux-kernel@vger.kernel.org, jing.lin@intel.com, bp@alien8.de,
tony.luck@intel.com, x86@kernel.org
Subject: Re: [PATCH] x86/asm: Add support for MOVDIR64B instruction
Date: Thu, 1 Aug 2019 22:43:48 +0300 [thread overview]
Message-ID: <20190801194348.GA6059@avx2> (raw)
> +static inline void movdir64b(void *dst, const void *src)
> +{
> + /* movdir64b [rdx], rax */
> + asm volatile(".byte 0x66, 0x0f, 0x38, 0xf8, 0x02"
> + : "=m" (*(char *)dst)
^^^^^^^^^^
> + : "d" (src), "a" (dst));
> +}
Probably needs fake 64-byte type, so that compiler knows what is dirty.
next reply other threads:[~2019-08-01 19:43 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-01 19:43 Alexey Dobriyan [this message]
2019-08-01 19:49 ` [PATCH] x86/asm: Add support for MOVDIR64B instruction Luck, Tony
2019-08-01 20:28 ` Kirill A. Shutemov
2019-08-01 20:36 ` Borislav Petkov
2019-08-01 22:06 ` Luck, Tony
2019-08-02 14:40 ` Borislav Petkov
2019-08-05 17:50 ` Lin, Jing
2019-08-01 21:53 ` Alexey Dobriyan
2019-08-02 8:15 ` Peter Zijlstra
2019-08-02 12:58 ` Kirill A. Shutemov
-- strict thread matches above, loose matches on Subject: below --
2019-07-30 23:05 Kirill A. Shutemov
2019-07-31 0:24 ` jinglin
2019-08-01 10:03 ` Borislav Petkov
2019-08-01 11:03 ` Kirill A. Shutemov
2019-08-01 19:20 ` Luck, Tony
2019-08-01 19:36 ` Borislav Petkov
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