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| author | Roman Kisel <[email protected]> | 2025-01-08 22:21:37 +0000 |
|---|---|---|
| committer | Wei Liu <[email protected]> | 2025-01-10 00:54:21 +0000 |
| commit | 07412e1f163de6567f5f4a2c8a44ae96a2a05422 (patch) | |
| tree | 5ee7e1428a35a21b311543c0366149c26e155750 /rust/compiler_builtins.rs | |
| parent | hyperv: Enable the hypercall output page for the VTL mode (diff) | |
| download | kernel-07412e1f163de6567f5f4a2c8a44ae96a2a05422.tar.gz kernel-07412e1f163de6567f5f4a2c8a44ae96a2a05422.zip | |
hyperv: Do not overlap the hvcall IO areas in get_vtl()
The Top-Level Functional Specification for Hyper-V, Section 3.6 [1, 2],
disallows overlapping of the input and output hypercall areas, and
get_vtl(void) does overlap them.
Use the output hypercall page of the current vCPU for the hypercall.
[1] https://learn.microsoft.com/en-us/virtualization/hyper-v-on-windows/tlfs/hypercall-interface
[2] https://github.com/MicrosoftDocs/Virtualization-Documentation/tree/main/tlfs
Fixes: 8387ce06d70b ("x86/hyperv: Set Virtual Trust Level in VMBus init message")
Signed-off-by: Roman Kisel <[email protected]>
Reviewed-by: Tianyu Lan <[email protected]>
Reviewed-by: Easwar Hariharan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Wei Liu <[email protected]>
Message-ID: <[email protected]>
Diffstat (limited to 'rust/compiler_builtins.rs')
0 files changed, 0 insertions, 0 deletions