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Re: [PATCH 3/5] gzip: refactor state tracking
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 12 Apr 2024 07:41:57 -0400
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- Cc: Jason Andryuk <jason.andryuk@xxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
- Delivery-date: Fri, 12 Apr 2024 11:42:15 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 4/12/24 07:34, Daniel P. Smith wrote:
On 4/11/24 15:24, 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.
I take it you are mainly talking about crc_32_tab? Yes, I can switch
that to being dynamically allocated.
Never mind, reading your comment on patch4 made me realize you wanted
the instance of struct dynamically allocated. Though the answer is
still, yes, we can dynamically allocate it.
v/r,
dps
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