On 27 February 2012 07:59, Ingo Molnar<mingo@xxxxxxx> wrote:
* Kevin Winchester<kjwinchester@xxxxxxxxx> wrote:
Various per-cpu fields are define in arch/x86/kernel/smpboot.c
that are basically equivalent to the cpu-specific data in
struct cpuinfo_x86. By moving these fields into the structure,
a number of codepaths can be simplified since they no longer
need to care about those fields not existing on !SMP builds.
Works mostly fine, except with the attached 32-bit UP !APIC
config I get various build failures (resolved via the patch
below) and a link failure (not resolved):
I get the following failure before I get to link time:
In file included from
/home/kevin/linux/linux-2.6/arch/x86/include/asm/uaccess.h:573:0,
from
/home/kevin/linux/linux-2.6/arch/x86/include/asm/sections.h:5,
from
/home/kevin/linux/linux-2.6/arch/x86/include/asm/hw_irq.h:26,
from include/linux/irq.h:357,
from
/home/kevin/linux/linux-2.6/arch/x86/include/asm/hardirq.h:5,
from include/linux/hardirq.h:7,
from include/linux/interrupt.h:12,
from net/core/pktgen.c:135:
In function ‘copy_from_user’,
inlined from ‘pktgen_if_write’ at net/core/pktgen.c:877:20:
/home/kevin/linux/linux-2.6/arch/x86/include/asm/uaccess_32.h:211:26:
error: call to ‘copy_from_user_overflow’ declared with attribute
error: copy_from_user() buffer size is not provably correct
make[2]: *** [net/core/pktgen.o] Error 1
On:
gcc (GCC) 4.6.2 20120120 (prerelease)
Is that my fault, or something else?
Kevin