Re: [PATCH v6 06/12] powerpc/fsl_booke/32: implement KASLR infrastructure
From: Scott Wood <oss@buserror.net>
Date: 2019-08-28 16:44:57
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On Wed, 2019-08-28 at 19:03 +0800, Jason Yan wrote:
On 2019/8/28 12:54, Scott Wood wrote:quoted
On Fri, Aug 09, 2019 at 06:07:54PM +0800, Jason Yan wrote:quoted
+/* + * To see if we need to relocate the kernel to a random offset + * void *dt_ptr - address of the device tree + * phys_addr_t size - size of the first memory block + */ +notrace void __init kaslr_early_init(void *dt_ptr, phys_addr_t size) +{ + unsigned long tlb_virt; + phys_addr_t tlb_phys; + unsigned long offset; + unsigned long kernel_sz; + + kernel_sz = (unsigned long)_end - KERNELBASE;Why KERNELBASE and not kernstart_addr?Did you mean kernstart_virt_addr? It should be kernstart_virt_addr.
Yes, kernstart_virt_addr. KERNELBASE will be incorrect if the kernel was loaded at a nonzero physical address without CONFIG_PHYSICAL_START being adjusted to match. -Scott