From: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> Date: Thu, 10 Dec 2009 16:00:18 -0600 > On Fri, 2009-12-11 at 00:27 +0300, Ilya Loginov wrote: >> On Thu, 10 Dec 2009 14:59:36 -0600 >> James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote: >> >> > To fix mips, you just need a >> > flush_kernel_dcache_page() in slram_read so that the alias is updated >> > after the memcpy. >> >> I think you right. But! If we choose this way: >> >> First. We need to realize flush_kernel_dcache_page() for many >> architectures. Am I right? > > Actually, I think only sparc and mips need it. It's only needed for an > aliasing architecture. Next, it's only used for pio drivers, so if the > platform never uses a pio driver, it can get away without having this > (that's the sparc case, I think). Sparc has PIO drivers, namely IDE, and we have special flushes inserted into the IDE string PIO routines to handle that case. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
