[PATCH 6/6] ARM: kvm: TMP: Commit the hyp page tables to main memory
Santosh Shilimkar
santosh.shilimkar at ti.com
Thu Nov 14 17:36:11 EST 2013
On Thursday 14 November 2013 02:37 PM, Santosh Shilimkar wrote:
> This is a temporary hack which I have to use to avoid a weired crash while
> starting the guest OS on Keystsone. They are random crashesh while the
> guest os userspace starts. Additional data point is, it seen only with first
> guest OS lanch. Subsequest guest OS starts normal.
>
> I still don't know why this is needed but it helps to get around the issue
> and hence including the patch in the series for the discussion
>
> Cc: Christoffer Dall <christoffer.dall at linaro.org>
> Cc: Marc Zyngier <marc.zyngier at arm.com>
> Cc: Russell King <linux at arm.linux.org.uk>
> Cc: Catalin Marinas <catalin.marinas at arm.com>
> Cc: Will Deacon <will.deacon at arm.com>
>
> Signed-off-by: Santosh Shilimkar <santosh.shilimkar at ti.com>
> ---
Ignore this patch. I thought it helps but in more testing I found
that issue still comes up even with the below change.
> arch/arm/kvm/mmu.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
> index 657f15e..5f6f460 100644
> --- a/arch/arm/kvm/mmu.c
> +++ b/arch/arm/kvm/mmu.c
> @@ -826,6 +826,7 @@ int kvm_mmu_init(void)
> goto out;
> }
>
> + flush_cache_all();
> return 0;
> out:
> free_hyp_pgds();
>
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