Re: [PATCH v4 6/6] powerpc/fsl_booke/kaslr: rename kaslr-booke32.rst to kaslr-booke.rst and add 64bit part
From: Scott Wood <oss@buserror.net>
Date: 2020-03-20 05:15:56
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On Fri, 2020-03-06 at 14:40 +0800, Jason Yan wrote:
quoted hunk ↗ jump to hunk
@@ -38,5 +41,29 @@ bit of the entropy to decide the index of the 64M zone.Then we chose a kernstart_virt_addr + +KASLR for Freescale BookE64 +--------------------------- + +The implementation for Freescale BookE64 is similar as BookE32. One
similar to
+difference is that Freescale BookE64 set up a TLB mapping of 1G during +booting. Another difference is that ppc64 needs the kernel to be +64K-aligned. So we can randomize the kernel in this 1G mapping and make +it 64K-aligned. This can save some code to creat another TLB map at early
create -Scott