linux

Marc Zyngier db69415c3f arm64: KVM: Do not use pgd_index to index stage-2 pgd commit `04b8dc85bf` upstream. The kernel's pgd_index macro is designed to index a normal, page sized array. KVM is a bit diffferent, as we can use concatenated pages to have a bigger address space (for example 40bit IPA with 4kB pages gives us an 8kB PGD. In the above case, the use of pgd_index will always return an index inside the first 4kB, which makes a guest that has memory above 0x8000000000 rather unhappy, as it spins forever in a page fault, whist the host happilly corrupts the lower pgd. The obvious fix is to get our own kvm_pgd_index that does the right thing(tm). Tested on X-Gene with a hacked kvmtool that put memory at a stupidly high address. Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> [ luis: backported to 3.16: used shannon's backport to 3.14 ] Signed-off-by: Luis Henriques <luis.henriques@canonical.com>		History 2015-05-20 13:25:54 +01:00
..
asm	arm64: KVM: Do not use pgd_index to index stage-2 pgd	2015-05-20 13:25:54 +01:00
debug	Samsung Exynos updates for 3.16	2014-05-30 21:44:49 -07:00
uapi/asm	ARM: 8097/1: unistd.h: relocate comments back to place	2014-09-05 16:36:28 -07:00