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authorPaolo Bonzini <pbonzini@redhat.com>2021-01-26 02:52:01 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2021-01-26 02:52:01 +0300
commit615099b01eb7127fb2f4bc956171a6a0accf688b (patch)
tree4659f3c859797375d95587d2cd3e47cf7e295a32 /Documentation
parent7c53f6b671f4aba70ff15e1b05148b10d58c2837 (diff)
parent139bc8a6146d92822c866cf2fd410159c56b3648 (diff)
downloadlinux-615099b01eb7127fb2f4bc956171a6a0accf688b.tar.xz
Merge tag 'kvmarm-fixes-5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 5.11, take #2 - Don't allow tagged pointers to point to memslots - Filter out ARMv8.1+ PMU events on v8.0 hardware - Hide PMU registers from userspace when no PMU is configured - More PMU cleanups - Don't try to handle broken PSCI firmware - More sys_reg() to reg_to_encoding() conversions
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/virt/kvm/api.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst
index c136e254b496..a9bf7f2ab76f 100644
--- a/Documentation/virt/kvm/api.rst
+++ b/Documentation/virt/kvm/api.rst
@@ -1281,6 +1281,9 @@ field userspace_addr, which must point at user addressable memory for
the entire memory slot size. Any object may back this memory, including
anonymous memory, ordinary files, and hugetlbfs.
+On architectures that support a form of address tagging, userspace_addr must
+be an untagged address.
+
It is recommended that the lower 21 bits of guest_phys_addr and userspace_addr
be identical. This allows large pages in the guest to be backed by large
pages in the host.