Re: [PATCH/RFC 3/9] KVM: s390: Fix low-address protection for real addresses

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On Mon, 16 Mar 2015 09:51:39 +0100
Christian Borntraeger <borntraeger@xxxxxxxxxx> wrote:

> From: Alexander Yarygin <yarygin@xxxxxxxxxxxxxxxxxx>
> 
> The kvm_s390_check_low_addr_protection() function is used only with real
> addresses. According to the POP (the "Low-Address Protection"
> paragraph in chapter 3), if the effective address is real or absolute,
> the low-address protection procedure should rise PROTECTION exception

s/rise/raise a/

> only when the low-address protection is enabled in the control register
> 0 and the address is low.
> This patch removes ASCE checks from the function and renames it to
> better reflect its behavior.
> 
> Cc: Thomas Huth <thuth@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Alexander Yarygin <yarygin@xxxxxxxxxxxxxxxxxx>
> Reviewed-by: Thomas Huth <thuth@xxxxxxxxxxxxxxxxxx>
> Reviewed-by: David Hildenbrand <dahi@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> ---
>  arch/s390/kvm/gaccess.c | 11 ++++++-----
>  arch/s390/kvm/gaccess.h |  2 +-
>  arch/s390/kvm/priv.c    |  4 ++--
>  3 files changed, 9 insertions(+), 8 deletions(-)

Acked-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx>

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