q3k
/
linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
linux/arch
History
Takuya Yoshikawa 1976d2d2c9 KVM: Remove redundant reading of rax on OUT instructions 
kvm_emulate_pio() and complete_pio() both read out the
RAX register value and copy it to a place into which
the value read out from the port will be copied later.

This patch removes this redundancy.

/*** snippet from arch/x86/kvm/x86.c ***/
int complete_pio(struct kvm_vcpu *vcpu)
{
	...
	if (!io->string) {
		if (io->in) {
			val = kvm_register_read(vcpu, VCPU_REGS_RAX);
			memcpy(&val, vcpu->arch.pio_data, io->size);
			kvm_register_write(vcpu, VCPU_REGS_RAX, val);
		}
	...

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>
 		2010-03-01 12:36:09 -03:00
..
alpha resource/PCI: mark struct resource as const 2010-02-22 16:16:57 -08:00
arm Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 2010-02-26 17:16:20 -08:00
avr32 avr32: clean up memory allocation in at32_add_device_mci 2009-12-28 12:33:00 +01:00
blackfin blackfin,kgdb: Do not put PC in gdb_regs into retx. 2010-01-07 11:58:37 -06:00
cris resource/PCI: mark struct resource as const 2010-02-22 16:16:57 -08:00
frv resource/PCI: mark struct resource as const 2010-02-22 16:16:57 -08:00
h8300 m68k{,nommu}/h8300: Remove obsolete comment about map_chunk 2010-02-27 18:27:14 +01:00
ia64 KVM: ia64: Fix string literal continuation lines 2010-03-01 12:36:07 -03:00
m32r elf: kill USE_ELF_CORE_DUMP 2009-12-16 07:20:12 -08:00
m68k m68k: Define sigcontext ABI of ColdFire 2010-02-27 18:44:10 +01:00
m68knommu m68knommu: NPTL support for uClinux 2010-02-27 18:35:22 +01:00
microblaze Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6 2010-02-25 15:38:37 -08:00
mips Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-02-28 10:38:45 -08:00
mn10300 PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs 2010-02-23 09:43:31 -08:00
parisc Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/xfs-vipt 2010-02-26 17:05:10 -08:00
powerpc KVM: PPC E500: fix tlbcfg emulation 2010-03-01 12:36:06 -03:00
s390 KVM: fix cleanup_srcu_struct on vm destruction 2010-03-01 12:36:01 -03:00
score Merge branch 'linus' into x86/mm 2010-02-17 18:28:05 +01:00
sh Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-02-28 10:20:25 -08:00
sparc Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-02-28 10:20:25 -08:00
um Merge branch 'x86-rwsem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-02-28 10:41:35 -08:00
x86 KVM: Remove redundant reading of rax on OUT instructions 2010-03-01 12:36:09 -03:00
xtensa resource/PCI: mark struct resource as const 2010-02-22 16:16:57 -08:00
.gitignore
…
Kconfig Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-02-28 10:17:55 -08:00