Jan Beulich 97b67ae559 x86-64: Use RIP-relative addressing for most per-CPU accesses ... Observing that per-CPU data (in the SMP case) is reachable by exploiting 64-bit address wraparound (building on the default kernel load address being at 16Mb), the one byte shorter RIP-relative addressing form can be used for most per-CPU accesses. The one exception are the "stable" reads, where the use of the "P" operand modifier prevents the compiler from using RIP-relative addressing, but is unavoidable due to the use of the "p" constraint (side note: with gcc 4.9.x the intended effect of this isn't being achieved anymore, see gcc bug 63637). With the dependency on the minimum kernel load address, arbitrarily low values for CONFIG_PHYSICAL_START are now no longer possible. A link time assertion is being added, directing to the need to increase that value when it triggers. Signed-off-by: Jan Beulich <jbeulich@suse.com> Link: http://lkml.kernel.org/r/5458A1780200007800044A9D@mail.emea.novell.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2014-11-04 20:43:14 +01:00
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asm	x86-64: Use RIP-relative addressing for most per-CPU accesses	2014-11-04 20:43:14 +01:00
uapi/asm	kvm: vmx: handle invvpid vm exit gracefully	2014-10-24 13:21:17 +02:00