https://github.com/torvalds/linux
Revision 5b2bdbc84556774afbe11bcfd24c2f6411cfa92b authored by Steven Rostedt on 27 February 2015, 19:50:19 UTC, committed by Ingo Molnar on 28 February 2015, 07:04:20 UTC
Commit:
1e02ce4cccdc ("x86: Store a per-cpu shadow copy of CR4")
added a shadow CR4 such that reads and writes that do not
modify the CR4 execute much faster than always reading the
register itself.
The change modified cpu_init() in common.c, so that the
shadow CR4 gets initialized before anything uses it.
Unfortunately, there's two cpu_init()s in common.c. There's
one for 64-bit and one for 32-bit. The commit only added
the shadow init to the 64-bit path, but the 32-bit path
needs the init too.
Link: http://lkml.kernel.org/r/20150227125208.71c36402@gandalf.local.home Fixes: 1e02ce4cccdc "x86: Store a per-cpu shadow copy of CR4"
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Andy Lutomirski <luto@amacapital.net>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20150227145019.2bdd4354@gandalf.local.home
Signed-off-by: Ingo Molnar <mingo@kernel.org>
1 parent 5838d18
Tip revision: 5b2bdbc84556774afbe11bcfd24c2f6411cfa92b authored by Steven Rostedt on 27 February 2015, 19:50:19 UTC
x86: Init per-cpu shadow copy of CR4 on 32-bit CPUs too
x86: Init per-cpu shadow copy of CR4 on 32-bit CPUs too
Tip revision: 5b2bdbc
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| arch | ||
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| crypto | ||
| drivers | ||
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| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
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| security | ||
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| .gitignore | -rw-r--r-- | 1.2 KB |
| .mailmap | -rw-r--r-- | 4.9 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 94.0 KB |
| Kbuild | -rw-r--r-- | 2.1 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 298.0 KB |
| Makefile | -rw-r--r-- | 53.3 KB |
| README | -rw-r--r-- | 18.3 KB |
| REPORTING-BUGS | -rw-r--r-- | 7.3 KB |
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