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Re: [PATCH v3 2/2] x86/boot: Add missing __XEN__ definition
- To: Frediano Ziglio <frediano.ziglio@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 9 Sep 2024 14:49:32 +0200
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- Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Mon, 09 Sep 2024 12:49:44 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 09.09.2024 14:04, Frediano Ziglio wrote:
> On Mon, Sep 9, 2024 at 12:21 PM Jan Beulich <jbeulich@xxxxxxxx> wrote:
>
>> On 09.09.2024 13:03, Frediano Ziglio wrote:
>>> --- a/xen/arch/x86/boot/Makefile
>>> +++ b/xen/arch/x86/boot/Makefile
>>> @@ -15,7 +15,7 @@ CFLAGS_x86_32 := $(subst -m64,-m32
>> -march=i686,$(XEN_TREEWIDE_CFLAGS))
>>> $(call cc-options-add,CFLAGS_x86_32,CC,$(EMBEDDED_EXTRA_CFLAGS))
>>> CFLAGS_x86_32 += -Werror -fno-builtin -g0 -msoft-float -mregparm=3
>>> CFLAGS_x86_32 += -nostdinc -include $(filter
>> %/include/xen/config.h,$(XEN_CFLAGS))
>>> -CFLAGS_x86_32 += $(filter -I% -O%,$(XEN_CFLAGS))
>>> +CFLAGS_x86_32 += $(filter -I% -O%,$(XEN_CFLAGS)) -D__XEN__
>>
>> Any reason not to similarly make this -D% as a filter expression?
>
> I saw that a lot of defines are about processor support which do not make
> sense for 32 bit.
>
> Do you want me to add a comment in the commit?
Since we're being deliberately selective then - yes, please.
Jan
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