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Date: Mon, 27 Feb 2012 20:52:55 -0400 From: Kevin Winchester <kjwinchester@...il.com> To: Ingo Molnar <mingo@...e.hu> Cc: "H. Peter Anvin" <hpa@...or.com>, Thomas Gleixner <tglx@...utronix.de>, Borislav Petkov <bp@...en8.de>, Randy Dunlap <rdunlap@...otime.net>, Nick Bowler <nbowler@...iptictech.com>, linux-kernel@...r.kernel.org Subject: Re: [PATCH v4 0/5] x86: Cleanup and simplify cpu-specific data On 27 February 2012 07:59, Ingo Molnar <mingo@...e.hu> wrote: > > * Kevin Winchester <kjwinchester@...il.com> 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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