qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH 13/30] memory: limit sections in the radix tree


From: Peter Maydell
Subject: Re: [Qemu-devel] [PATCH 13/30] memory: limit sections in the radix tree to the actual address space size
Date: Tue, 21 May 2013 13:02:03 +0100

On 21 May 2013 11:57, Paolo Bonzini <address@hidden> wrote:
> From: Avi Kivity <address@hidden>
>
> The radix tree is statically sized to fit TARGET_PHYS_ADDR_SPACE_BITS.
> If a larger memory region is registered, it will overflow.
>
> Fix by limiting any section in the radix tree to the supported size.
>
> This problem was not observed earlier since artificial regions (containers
> and aliases) are eliminated by the memory core, leaving only device regions
> which have reasonable sizes.  An IOMMU however cannot be eliminated by the
> memory core, and may have an artificial size.
>
> Signed-off-by: Avi Kivity <address@hidden>
> [ Fail the build if TARGET_PHYS_ADDR_SPACE_BITS is too large - Paolo ]
> Signed-off-by: Paolo Bonzini <address@hidden>

Reviewed-by: Peter Maydell <address@hidden>

-- PMM



reply via email to

[Prev in Thread] Current Thread [Next in Thread]