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Re: [PATCH] xen: Strip xen.efi by default
- To: Frediano Ziglio <freddy77@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 11 Jun 2025 11:35:26 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 11 Jun 2025 09:35:46 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 10.06.2025 12:12, Frediano Ziglio wrote:
> For xen.gz file we strip all symbols and have an additional
> xen-syms file version with all symbols.
> Make xen.efi more coherent stripping all symbols too.
And the other difference (compressed vs not) still remains.
> xen.efi.elf can be used for debugging.
Hmm, that's the result of ...
> --- a/xen/arch/x86/Makefile
> +++ b/xen/arch/x86/Makefile
> @@ -238,6 +238,7 @@ endif
> > $@.map
> ifeq ($(CONFIG_DEBUG_INFO),y)
> $(if $(filter --strip-debug,$(EFI_LDFLAGS)),:$(space))$(OBJCOPY) -O
> elf64-x86-64 $@ $@.elf
> + $(if $(filter --strip-debug,$(EFI_LDFLAGS)),:$(space))$(STRIP) $@
> endif
> rm -f $(dot-target).[0-9]* $(@D)/..$(@F).[0-9]*
> ifeq ($(CONFIG_XEN_IBT),y)
... objcopy. Having looked at the involved code in that utility, I mistrust its
output from such a conversion to really be an exact representation of the input.
IOW I'd much rather use the original file. As a possible compromise, could we
perhaps merely strip debug info, but retain the symbol table, matching the
prior default for $(efi-strip-opt)?
Jan
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