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Re: [PATCH 3/5] gzip: refactor state tracking
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 18 Apr 2024 09:36:09 +0200
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- Cc: Jason Andryuk <jason.andryuk@xxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 18 Apr 2024 07:36:18 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 11.04.2024 21:24, Andrew Cooper wrote:
> On 11/04/2024 4:25 pm, Daniel P. Smith wrote:
>> diff --git a/xen/common/gzip/gunzip.c b/xen/common/gzip/gunzip.c
>> index 1bcb007395ba..9b4891731b8b 100644
>> --- a/xen/common/gzip/gunzip.c
>> +++ b/xen/common/gzip/gunzip.c
>> @@ -102,12 +109,13 @@ __init int gzip_check(char *image, unsigned long
>> image_len)
>>
>> __init int perform_gunzip(char *output, char *image, unsigned long
>> image_len)
>> {
>> + struct gzip_data gd;
>> int rc;
>
> By the end of this series,
>
> Reading symbols from xen-syms...
> (gdb) p sizeof(struct gzip_data)
> $1 = 2120
>
> x86 has an 8k stack and this takes 1/4 of it. Other bits of state are
> dynamically allocated, even in inflate.c, so I'd highly recommend doing
> the same for this.
>
>
> Also, could I nitpick the name and request:
>
> struct gzip_state *s;
Except: Why "gzip" when it's un-zipping state?
Jan
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