Re: [PATCH v6 07/13] arm64: add basic pointer authentication support
From: Pavel Machek <hidden>
Date: 2019-01-03 20:29:07
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On Fri 2018-12-07 18:39:25, Kristina Martsenko wrote:
From: Mark Rutland <mark.rutland@arm.com> This patch adds basic support for pointer authentication, allowing userspace to make use of APIAKey, APIBKey, APDAKey, APDBKey, and APGAKey. The kernel maintains key values for each process (shared by all threads within), which are initialised to random values at exec()
time. ...
+/*
+ * We give each process its own keys, which are shared by all threads. The keys
+ * are inherited upon fork(), and reinitialised upon exec*().
+ */
+struct ptrauth_keys {
+ struct ptrauth_key apia;
+ struct ptrauth_key apib;
+ struct ptrauth_key apda;
+ struct ptrauth_key apdb;
+ struct ptrauth_key apga;
+};intstruction_a, data_a, generic_a? Should be easier to understand than "apdb" ... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html