arm/arm64: KVM: Fix and refactor unmap_range

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commit 4f853a714b upstream.

unmap_range() was utterly broken, to quote Marc, and broke in all sorts
of situations.  It was also quite complicated to follow and didn't
follow the usual scheme of having a separate iterating function for each
level of page tables.

Address this by refactoring the code and introduce a pgd_clear()
function.

Reviewed-by: Jungseok Lee <jays.lee@samsung.com>
Reviewed-by: Mario Smarduch <m.smarduch@samsung.com>
Acked-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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Christoffer Dall 2014-05-09 23:31:31 +02:00 • committed by Greg Kroah-Hartman

parent e42ec4ae3b

commit 19a2d45ac6

3 changed files with 111 additions and 72 deletions

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12

arch/arm/include/asm/kvm_mmu.h

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164

arch/arm/kvm/mmu.c

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15

arch/arm64/include/asm/kvm_mmu.h

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