Messages in this thread | | | Date | Tue, 9 Jan 2018 09:17:00 -0800 | From | Christoph Hellwig <> | Subject | Re: [PATCH v3 02/13] arm64: Kconfig: Reword UNMAP_KERNEL_AT_EL0 kconfig entry |
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On Mon, Jan 08, 2018 at 05:32:27PM +0000, Will Deacon wrote: > Although CONFIG_UNMAP_KERNEL_AT_EL0 does make KASLR more robust, it's > actually more useful as a mitigation against speculation attacks that > can leak arbitrary kernel data to userspace through speculation. > > Reword the Kconfig help message to reflect this, and make the option > depend on EXPERT so that it is on by default for the majority of users.
I still haven't heard an anwer on why this isn't using CONFIG_PAGE_TABLE_ISOLATION but instead reinvents its own symbol.
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