Re: [PATCH v2 5/5] libxenguest: simplify kernel decompression

[Wei Liu <wl@xxxxxxx>]

On Tue, Jan 19, 2021 at 04:17:12PM +0100, Jan Beulich wrote:
> In all cases the kernel build makes available the uncompressed size in
> the final 4 bytes of the bzImage payload. Utilize this to avoid
> repeated realloc()ing of the output buffer.
> 
> As a side effect this also addresses the previous mistaken return of 0
> (success) from xc_try_{bzip2,lzma,xz}_decode() in case
> xc_dom_register_external() would have failed.
> 
> As another side effect this also addresses the first error path of
> _xc_try_lzma_decode() previously bypassing lzma_end().
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

I think the code changes are correct:

Acked-by: Wei Liu <wl@xxxxxxx>

But a second pair of eyes would be useful here since this patch is
complex.

Wei.