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| author | Paolo Bonzini <pbonzini@redhat.com> | 2021-02-06 17:53:33 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-02-08 22:49:01 +0300 |
| commit | 897218ff7cf19290ec2d69652ce673d8ed6fedeb (patch) | |
| tree | e2901b8ab7865dc22205fdd57c173f72279aad19 /mm | |
| parent | e36b250e502a6145fa95a3d93af83ba66fc6ae1b (diff) | |
| download | linux-897218ff7cf19290ec2d69652ce673d8ed6fedeb.tar.xz | |
KVM: x86: compile out TDP MMU on 32-bit systems
The TDP MMU assumes that it can do atomic accesses to 64-bit PTEs.
Rather than just disabling it, compile it out completely so that it
is possible to use for example 64-bit xchg.
To limit the number of stubs, wrap all accesses to tdp_mmu_enabled
or tdp_mmu_page with a function. Calls to all other functions in
tdp_mmu.c are eliminated and do not even reach the linker.
Reviewed-by: Sean Christopherson <seanjc@google.com>
Tested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions