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(parent: 12cb814) | patch
KVM: Validate userspace_addr of memslot when registered
authorTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Sat, 7 May 2011 07:35:38 +0000 (16:35 +0900)
committerAvi Kivity <avi@redhat.com>
Sun, 22 May 2011 12:47:56 +0000 (08:47 -0400)
commitfa3d315a4ce2c0891cdde262562e710d95fba19e
tree79205998f6734b51628f92641124dbe4aaa9882ftree | snapshot
parent12cb814f3bb35736420cc6bfc9fed7b6a9d3a828commit | diff
KVM: Validate userspace_addr of memslot when registered

This way, we can avoid checking the user space address many times when
we read the guest memory.

Although we can do the same for write if we check which slots are
writable, we do not care write now: reading the guest memory happens
more often than writing.

[avi: change VERIFY_READ to VERIFY_WRITE]

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>
arch/x86/kvm/paging_tmpl.h diff | blob | history
virt/kvm/kvm_main.c diff | blob | history
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