diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2021-01-25 18:52:01 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-01-25 18:52:01 -0500 |
| commit | 615099b01eb7127fb2f4bc956171a6a0accf688b (patch) | |
| tree | 4659f3c859797375d95587d2cd3e47cf7e295a32 /Documentation | |
| parent | 7c53f6b671f4aba70ff15e1b05148b10d58c2837 (diff) | |
| parent | 139bc8a6146d92822c866cf2fd410159c56b3648 (diff) | |
| download | lwn-615099b01eb7127fb2f4bc956171a6a0accf688b.tar.gz lwn-615099b01eb7127fb2f4bc956171a6a0accf688b.zip | |
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.rst | 3 |
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. |