mshv: use VP register page for RIP/RAX writes in run_vcpu#1366
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ludfjig wants to merge 1 commit intohyperlight-dev:mainfrom
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mshv: use VP register page for RIP/RAX writes in run_vcpu#1366ludfjig wants to merge 1 commit intohyperlight-dev:mainfrom
ludfjig wants to merge 1 commit intohyperlight-dev:mainfrom
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Replace set_reg() hypercalls with direct VP register page writes for the RIP increment on IO exits and the RAX write on IO-in (hw-interrupts). The VP register page is a shared memory page between userspace and the hypervisor that is picked up automatically on the next DISPATCH_VP, eliminating one hypercall per IO exit. Signed-off-by: Ludvig Liljenberg <4257730+ludfjig@users.noreply.github.com>
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Replace set_reg() hypercalls with direct VP register page writes for the RIP increment on IO exits and the RAX write on IO-in (hw-interrupts). The VP register page is a shared memory page between userspace and the hypervisor that is picked up automatically on the next DISPATCH_VP, eliminating one hypercall per IO exit.
Benchmark Results (MSHV)