linux/arch
Takuya Yoshikawa 12cb814f3b KVM: MMU: Clean up gpte reading with copy_from_user()
When we optimized walk_addr_generic() by not using the generic guest
memory reader, we replaced copy_from_user() with get_user():

  commit e30d2a170506830d5eef5e9d7990c5aedf1b0a51
  KVM: MMU: Optimize guest page table walk

  commit 15e2ac9a43d4d7d08088e404fddf2533a8e7d52e
  KVM: MMU: Fix 64-bit paging breakage on x86_32

But as Andi pointed out later, copy_from_user() does the same as
get_user() as long as we give a constant size to it.

So we use copy_from_user() to clean up the code.

The only, noticeable, regression introduced by this is 64-bit gpte
reading on x86_32 hosts needed for PAE guests.

But this can be mitigated by implementing 8-byte get_user() for x86_32,
if needed.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22 08:47:54 -04:00
..
alpha alpha: Fix uninitialized value in read_persistent_clock. 2011-04-17 14:41:30 -07:00
arm Merge branch 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into perf/urgent 2011-05-06 08:11:28 +02:00
avr32 avr32: add ATAG_BOARDINFO 2011-04-13 15:46:59 +02:00
blackfin Blackfin: SMP: fix cache flush loop 2011-04-13 19:34:06 -04:00
cris Fix common misspellings 2011-03-31 11:26:23 -03:00
frv Fix common misspellings 2011-03-31 11:26:23 -03:00
h8300 genirq: Remove the now obsolete config options and select statements 2011-03-30 14:13:23 +02:00
ia64 KVM: ia64: fix sparse warnings 2011-05-22 08:39:57 -04:00
m32r Fix common misspellings 2011-03-31 11:26:23 -03:00
m68k m68k/mm: Set all online nodes in N_NORMAL_MEMORY 2011-04-27 17:36:00 +02:00
microblaze usb: Fix Kconfig unmet dependencies for Microblaze EHCI 2011-04-13 15:43:59 -07:00
mips MIPS: Alchemy: fix xxs1500 build error 2011-05-10 18:15:26 +01:00
mn10300 Fix common misspellings 2011-03-31 11:26:23 -03:00
parisc [PARISC] set memory ranges in N_NORMAL_MEMORY when onlined 2011-04-21 09:32:38 -05:00
powerpc KVM: PPC: booke: add sregs support 2011-05-22 08:47:53 -04:00
s390 [S390] irqstats: fix counting of pfault, dasd diag and virtio irqs 2011-04-29 10:42:25 +02:00
score Fix common misspellings 2011-03-31 11:26:23 -03:00
sh sh, hw_breakpoints: Fix racy access to ptrace breakpoints 2011-04-25 17:36:12 +02:00
sparc Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
tile Fix common misspellings 2011-03-31 11:26:23 -03:00
um um: adjust current_thread_info() for newer gcc versions 2011-04-28 11:28:21 -07:00
unicore32 Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
x86 KVM: MMU: Clean up gpte reading with copy_from_user() 2011-05-22 08:47:54 -04:00
xtensa xtensa: Fixup irq conversion fallout and nmi_count 2011-04-20 00:32:09 +02:00
.gitignore
Kconfig oprofile, s390: Cleanups 2011-03-16 14:30:40 +01:00