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Paolo Bonzini d40a6898e5 KVM: emulate: protect checks on ctxt->d by a common "if (unlikely())" 
There are several checks for "peculiar" aspects of instructions in both
x86_decode_insn and x86_emulate_insn.  Group them together, and guard
them with a single "if" that lets the processor quickly skip them all.
Make this more effective by adding two more flag bits that say whether the
.intercept and .check_perm fields are valid.  We will reuse these
flags later to avoid initializing fields of the emulate_ctxt struct.

This skims about 30 cycles for each emulated instructions, which is
approximately a 3% improvement.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-07-11 09:13:58 +02:00
..
alpha Merge commit '3cf2f34' into sched/core, to fix build error 2014-06-12 13:46:37 +02:00
arc Merge commit '3cf2f34' into sched/core, to fix build error 2014-06-12 13:46:37 +02:00
arm This pull request contains the second half the of the clk changes for 2014-06-15 16:02:20 -10:00
arm64 Merge commit '3cf2f34' into sched/core, to fix build error 2014-06-12 13:46:37 +02:00
avr32 Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next 2014-06-03 12:57:53 -07:00
blackfin blackfin updates for Linux 3.16 2014-06-12 20:08:47 -07:00
c6x DeviceTree for 3.16: 2014-06-04 10:02:38 -07:00
cris cris: update comments for generic idle conversion 2014-06-06 16:08:18 -07:00
frv sys_sgetmask/sys_ssetmask: add CONFIG_SGETMASK_SYSCALL 2014-06-04 16:54:14 -07:00
hexagon
ia64 Merge commit '3cf2f34' into sched/core, to fix build error 2014-06-12 13:46:37 +02:00
m32r
m68k Merge commit '3cf2f34' into sched/core, to fix build error 2014-06-12 13:46:37 +02:00
metag Merge commit '3cf2f34' into sched/core, to fix build error 2014-06-12 13:46:37 +02:00
microblaze Microblaze patches for 3.16-rc1 2014-06-05 16:15:33 -07:00
mips MIPS: KVM: Remove dead code of TLB index error in kvm_mips_emul_tlbwr() 2014-06-30 16:52:04 +02:00
mn10300 sys_sgetmask/sys_ssetmask: add CONFIG_SGETMASK_SYSCALL 2014-06-04 16:54:14 -07:00
openrisc DeviceTree for 3.16: 2014-06-04 10:02:38 -07:00
parisc Merge commit '3cf2f34' into sched/core, to fix build error 2014-06-12 13:46:37 +02:00
powerpc Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2014-06-12 21:23:38 -07:00
s390 Fix sie.h header related problems introduced during the 3.16 development 2014-06-30 16:51:47 +02:00
score
sh Merge commit '3cf2f34' into sched/core, to fix build error 2014-06-12 13:46:37 +02:00
sparc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-06-12 14:27:40 -07:00
tile Merge commit '3cf2f34' into sched/core, to fix build error 2014-06-12 13:46:37 +02:00
um Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2014-06-12 21:23:38 -07:00
unicore32 arch/unicore32/mm/ioremap.c: return NULL on invalid pfn 2014-06-04 16:53:53 -07:00
x86 KVM: emulate: protect checks on ctxt->d by a common "if (unlikely())" 2014-07-11 09:13:58 +02:00
xtensa Merge commit '3cf2f34' into sched/core, to fix build error 2014-06-12 13:46:37 +02:00
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