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Re: calculation overflow in grub_mm_init_region (patch)
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From: |
Seth Goldberg |
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Subject: |
Re: calculation overflow in grub_mm_init_region (patch) |
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Date: |
Wed, 11 Sep 2013 10:01:55 -0700 |
On Sep 10, 2013, at 3:36 PM, Leif Lindholm <address@hidden> wrote:
> On 10 September 2013 22:46, Seth Goldberg <address@hidden> wrote:
>> Why would region_end be zero? That sounds like an invalid value.
>
> Because when a heap region sits at the top of RAM, region base +
> region size == 0.
So, an overflow. Ugh. Reserving the last 4k would be fine, too, yes.
--S
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> /
> Leif
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