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[Xen-devel] Xen 3.1-testing 32bit vmx fails to compile(CS 15577/tip)

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Xen 3.1-testing 32bit vmx fails to compile(CS 15577/tip)
From: Ralph Passgang <xen@xxxxxxxxxxxxx>
Date: Fri, 11 Jan 2008 01:40:33 +0100
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Hi,

I just found that xen 3.1-testing changeset 15577 fails to build on i386 on 
debian sid/lenny/etch. It seems to compile just fine on amd64/etch.

The following happens compiling the 32bit version:
[...]
gcc -O2 -fomit-frame-pointer -m32 -march=i686 -DNDEBUG -fno-strict-aliasing 
-std=gnu99 -Wall -Wstrict-prototypes -Wno-unused-value 
-Wdeclaration-after-statement -nostdinc -fno-builtin -fno-common -iwithprefix 
include -Werror -Wno-pointer-arith -pipe 
-I/tmp/buildd/xen-3.1-3.1.3-0/debian/build/build-hypervisor_i386_i386/xen/include
 
-I/tmp/buildd/xen-3.1-3.1.3-0/debian/build/build-hypervisor_i386_i386/xen/include/asm-x86/mach-generic
 
-I/tmp/buildd/xen-3.1-3.1.3-0/debian/build/build-hypervisor_i386_i386/xen/include/asm-x86/mach-default
 -msoft-float -fno-stack-protector -g -D__XEN__ -DACM_SECURITY -c 
vmx.c -o vmx.o
cc1: warnings being treated as errors
vmx.c: In function 'vmx_install_vlapic_mapping':
vmx.c:2694: warning: right shift count >= width of type
vmx.c:2695: warning: right shift count >= width of type
make[8]: *** [vmx.o] Error 1
make[8]: Leaving directory 
`/tmp/buildd/xen-3.1-3.1.3-0/debian/build/build-hypervisor_i386_i386/xen/arch/x86/hvm/vmx'
make[7]: *** [vmx/built_in.o] Error 2
[...]

The last changeset that I tried and that compiled on i386 was 15564. So the 
last 13 changesets could be the cause. The following 4 changesets changed 
the vmx.c, so most likely one of them causes this (but I haven't looked any 
further):

15565, 15567, 15571, 15575

Would be great if someone could take a look...

Thx,
 Ralph

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