Hi Cunsuo, Thanks for you prompt reply. But I'm just wondering why the other policies(such as writethrough) are abandoned, does anyone know the architecture difference?
Cheers, Jacky Sent from my HTC ----- Reply message ----- From: "Cunsuo Guo" <[email protected]> To: "Jacky lin" <[email protected]> Cc: <[email protected]> Subject: cache policy of arm mmu Date: Tue, May 29, 2012 09:10 Hi Jacky， I think the information of printk has already tell us the reason. 2012/5/29 Jacky lin <[email protected]>: > Hi all, > > I found that the cache policy in after ARMv6 is always set as writeback mode > in mmu.c. > > static int __init early_cachepolicy(char *p) > { > ... > if (cpu_architecture() >= CPU_ARCH_ARMv6) { > printk(KERN_WARNING "Only cachepolicy=writeback supported on ARMv6 > and later\n"); > cachepolicy = CPOLICY_WRITEBACK; > } > ... > } > > Does anyone know why and provide some documents or links for that? > > Thanks so much! > > Cheers, > Jacky > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >
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