Messages in this thread | | | From | (Alan Cox) | Subject | Re: Big Fix for 2.2.1 | Date | Tue, 26 Jan 1999 19:23:23 +0000 (GMT) |
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> (1) The identity phys_to_virt(virt_to_phys(x)) == x is violated. > > (2) The readb/writeb/readw/writew/readl/writel macros are completely incorrect > since they are supposed to be applied to memory mapped I/O regions > allocated with ioremap, but ioremap returns a kernel virtual address > and hence no further mapping is appropriate.
This change breaks half the drivers in the kernel. Everything assumes they take physical addresses.
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