Messages in this thread | | | Date | Sun, 30 Aug 2009 13:04:41 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 2/3] x86, msr: rewrite AMD rd/wrmsr variants |
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On 08/30/2009 04:50 AM, Borislav Petkov wrote: > + > +#define memset(d,c,l) __builtin_memset(d,c,l) > static inline int rdmsrl_amd_safe(unsigned msr, unsigned long long *p) > { > - int err; > + u32 gprs[8]; > + int err, i; > + > + memset(gprs, 0, sizeof(u32) * 8); > + > + gprs[1] = msr; > + gprs[7] = 0x9c5a203a; > + > + err = native_rdmsr_safe_regs(gprs); > + > + *p = gprs[0] | ((u64)gprs[2] << 32); > > - *p = native_read_msr_amd_safe(msr, &err); > return err; > } >
In file included from /home/hpa/kernel/linux-2.6-tip.msr/arch/x86/include/asm/processor.h:21, from /home/hpa/kernel/linux-2.6-tip.msr/include/linux/prefetch.h:14, from /home/hpa/kernel/linux-2.6-tip.msr/include/linux/list.h:6, from /home/hpa/kernel/linux-2.6-tip.msr/include/linux/smp.h:11, from /home/hpa/kernel/linux-2.6-tip.msr/include/linux/kernel_stat.h:4, from /home/hpa/kernel/linux-2.6-tip.msr/arch/x86/kernel/irq_64.c:11: /home/hpa/kernel/linux-2.6-tip.msr/arch/x86/include/asm/msr.h: In function ‘rdmsrl_amd_safe’: /home/hpa/kernel/linux-2.6-tip.msr/arch/x86/include/asm/msr.h:176: warning: unused variable ‘i’
-- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.
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