[PATCH] arm/arm64: KVM: Fix VTTBR_BADDR_MASK and pgd alloc
From: catalin.marinas@arm.com (Catalin Marinas)
Date: 2014-09-26 11:18:46
Also in:
kvm
From: catalin.marinas@arm.com (Catalin Marinas)
Date: 2014-09-26 11:18:46
Also in:
kvm
On Thu, Sep 25, 2014 at 07:32:19PM +0100, Christoffer Dall wrote:
From: Joel Schopp <redacted> The current aarch64 calculation for VTTBR_BADDR_MASK masks only 39 bits and not all the bits in the PA range. This is clearly a bug that manifests itself on systems that allocate memory in the higher address space range. [ Modified from Joel's original patch to be based on PHYS_MASK_SHIFT instead of a hard-coded value and to move the alignment check of the allocation to mmu.c. Also added a comment explaining why we hardcode the IPA range and changed the stage-2 pgd allocation to be based on the 40 bit IPA range instead of the maximum possible 48 bit PA range. - Christoffer ] Signed-off-by: Joel Schopp <redacted> Signed-off-by: Christoffer Dall <redacted>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>