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From: Richard Henderson <richard.henderson@linaro.org>
To: Thomas Huth <thuth@redhat.com>, qemu-devel@nongnu.org
Cc: "Philippe Mathieu-Daudé" <philmd@linaro.org>,
	"Hyman Huang" <huangy81@chinatelecom.cn>,
	"Peter Xu" <peterx@redhat.com>,
	"Markus Armbruster" <armbru@redhat.com>
Subject: Re: [PATCH] softmmu: Move dirtylimit.c into the target independent source set
Date: Thu, 13 Apr 2023 12:31:16 +0200	[thread overview]
Message-ID: <8177194c-853e-de0b-fe06-0ae82bbc127f@linaro.org> (raw)
In-Reply-To: <20230413054509.54421-1-thuth@redhat.com>

On 4/13/23 07:45, Thomas Huth wrote:
>       uint32_t dirty_ring_size = kvm_dirty_ring_size();
>       uint64_t dirty_ring_size_meory_MB =
> -        dirty_ring_size * TARGET_PAGE_SIZE >> 20;
> +        dirty_ring_size * qemu_target_page_size() >> 20;

Existing problem, the types here are suspicious: dirty_ring_size is uint32_t, 
dirty_ring_size_meory (typo) is uint64_t.

I wonder if this is better computed as

     uint32_t dirty_ring_size_MB = dirty_ring_size >> (20 - qemu_target_page_bits());


r~



  reply	other threads:[~2023-04-13 13:38 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-13  5:45 [PATCH] softmmu: Move dirtylimit.c into the target independent source set Thomas Huth
2023-04-13 10:31 ` Richard Henderson [this message]
2023-04-26 15:05   ` Thomas Huth
2023-04-13 13:02 ` Fabiano Rosas

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