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Re: [XEN PATCH 0/2] Use streaming decompression for ZSTD kernels
- To: Rafaël Kooi <rafael_andreas@xxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 10 May 2023 09:54:31 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 10 May 2023 07:54:42 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 10.05.2023 02:18, Rafaël Kooi wrote:
> A problem I ran into was that adding book keeping to decompress.c would
> result in either a .data section being added or a .bss.* section. The
> linker would complain about this. And since I am not familiar with this
> code, and why it is this way, I opted to add a user-pointer to the
> internal decompression API.
At least gunzip uses global variables to track state as well. Without you
being explicit, I guess you mean "Error: size of <file>:<section> is <size>",
which is emitted by our build system, not the linker? That's easy to overcome
without touching all decompressors - use __initdata. See common/gunzip.c.
Jan
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