linux-kernel - load_unaligned_zeropad() on x86-64

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Message-ID: <46823b75d3c54a89a7192d8e1011e212@AcuMS.aculab.com>
Date:   Sat, 14 Nov 2020 15:53:29 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>,
        'Linus Torvalds' <torvalds@...ux-foundation.org>
Subject: load_unaligned_zeropad() on x86-64

The change e419b4cc585680940bc42f8ca8a071d6023fb1bb added
asm code for load_unaligned_zeropad().

However it doesn't look right for 64bit.
It masks the address with ~3 not ~7 so the second
access could still cross a page boundary and fault.

	David

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