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From: Richard Henderson <richard.henderson@linaro.org>
To: LIU Zhiwei <zhiwei_liu@c-sky.com>, qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, alex.bennee@linaro.org
Subject: Re: [PATCH 2/4] target/arm: Fixup contiguous first-fault and no-fault loads
Date: Tue, 8 Dec 2020 14:16:11 -0600	[thread overview]
Message-ID: <7c6ad308-a2ae-c90b-cac5-19c486b441b3@linaro.org> (raw)
In-Reply-To: <20201207044655.2312-3-zhiwei_liu@c-sky.com>

On 12/6/20 10:46 PM, LIU Zhiwei wrote:
> First-fault or no-fault doesn't mean only access one page.

But the implementation is *allowed* to access only one page.
Thus the comment:

> -    /*
> -     * MemSingleNF is allowed to fail for any reason.  We have special
> -     * code above to handle the first element crossing a page boundary.
> -     * As an implementation choice, decline to handle a cross-page element
> -     * in any other position.
> -     */


r~


  reply	other threads:[~2020-12-08 21:38 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-07  4:46 [PATCH 0/4] target/arm bug fix LIU Zhiwei
2020-12-07  4:46 ` [PATCH 1/4] target/arm: Fixup special cross page case for sve continuous load/store LIU Zhiwei
2020-12-08 20:13   ` Richard Henderson
2020-12-07  4:46 ` [PATCH 2/4] target/arm: Fixup contiguous first-fault and no-fault loads LIU Zhiwei
2020-12-08 20:16   ` Richard Henderson [this message]
2020-12-10 11:54     ` LIU Zhiwei
2020-12-07  4:46 ` [PATCH 3/4] target/arm: Fixup SIMD fcmla(by element) in 4H arrangement LIU Zhiwei
2020-12-08 21:04   ` Richard Henderson
2020-12-07  4:46 ` [PATCH 4/4] target/arm: adjust CPTR_EL2 according to HCR_EL2.E2H LIU Zhiwei
2020-12-08 20:58   ` Richard Henderson

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