Thomas Gleixner 1dddd25125 x86/kaslr: Fix the vaddr_end mess ... vaddr_end for KASLR is only documented in the KASLR code itself and is adjusted depending on config options. So it's not surprising that a change of the memory layout causes KASLR to have the wrong vaddr_end. This can map arbitrary stuff into other areas causing hard to understand problems. Remove the whole ifdef magic and define the start of the cpu_entry_area to be the end of the KASLR vaddr range. Add documentation to that effect. Fixes: 92a0f81d89 ("x86/cpu_entry_area: Move it out of the fixmap") Reported-by: Benjamin Gilbert <benjamin.gilbert@coreos.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Benjamin Gilbert <benjamin.gilbert@coreos.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: stable <stable@vger.kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Garnier <thgarnie@google.com>, Cc: Alexander Kuleshov <kuleshovmail@gmail.com> Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801041320360.1771@nanos		2018-01-05 00:39:57 +01:00
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asm	x86/kaslr: Fix the vaddr_end mess	2018-01-05 00:39:57 +01:00
uapi/asm	x86/mm: Use/Fix PCID to optimize user/kernel switches	2017-12-23 21:13:00 +01:00