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authorSam bobroff <sam.bobroff@au1.ibm.com>2015-05-27 02:56:57 +0300
committerAlexander Graf <agraf@suse.de>2015-08-22 12:16:19 +0300
commitc63517c2e3810071359af926f621c1f784388c3f (patch)
tree7687ac199f73c810ffc480b274941b77eff8fab3 /Documentation/virtual/kvm/api.txt
parent563a1e93afac4d2c135072461fbab418b9dff43f (diff)
downloadlinux-c63517c2e3810071359af926f621c1f784388c3f.tar.xz
KVM: PPC: Book3S: correct width in XER handling
In 64 bit kernels, the Fixed Point Exception Register (XER) is a 64 bit field (e.g. in kvm_regs and kvm_vcpu_arch) and in most places it is accessed as such. This patch corrects places where it is accessed as a 32 bit field by a 64 bit kernel. In some cases this is via a 32 bit load or store instruction which, depending on endianness, will cause either the lower or upper 32 bits to be missed. In another case it is cast as a u32, causing the upper 32 bits to be cleared. This patch corrects those places by extending the access methods to 64 bits. Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com> Reviewed-by: Laurent Vivier <lvivier@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Tested-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Alexander Graf <agraf@suse.de>
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