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Groups > linux.kernel > #1392543
| From | Dave Hansen <dave.hansen@linux.intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v2 3/4] x86, boot: Implement ASLR for kernel memory sections (x86_64) |
| Date | 2016-05-03 00:10 +0200 |
| Message-ID | <ruucq-3Fl-3@gated-at.bofh.it> (permalink) |
| References | <rutT4-3cr-9@gated-at.bofh.it> <rutT5-3cr-29@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 05/02/2016 02:41 PM, Thomas Garnier wrote: > -#define __PAGE_OFFSET _AC(0xffff880000000000, UL) > +#define __PAGE_OFFSET_BASE _AC(0xffff880000000000, UL) > +#ifdef CONFIG_RANDOMIZE_MEMORY > +#define __PAGE_OFFSET page_offset_base > +#else > +#define __PAGE_OFFSET __PAGE_OFFSET_BASE > +#endif /* CONFIG_RANDOMIZE_MEMORY */ Do you have any data about the performance impact of this change? It's not necessary to have it to merge something like this, I'm just curious how bad it is.
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[PATCH v2 3/4] x86, boot: Implement ASLR for kernel memory sections (x86_64) Thomas Garnier <thgarnie@google.com> - 2016-05-02 23:50 +0200
Re: [PATCH v2 3/4] x86, boot: Implement ASLR for kernel memory sections (x86_64) Dave Hansen <dave.hansen@linux.intel.com> - 2016-05-03 00:10 +0200
Re: [PATCH v2 3/4] x86, boot: Implement ASLR for kernel memory sections (x86_64) Thomas Garnier <thgarnie@google.com> - 2016-05-03 21:20 +0200
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