hv: hyperv: Add hyperv page destory function #8760
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In current code process, hyperv data in struct vm_arch is never cleared during VM shutdown and is retained to next VM launch. As the enabled bit of hypercall_page msr is not clear, hypercall page might cause fatal error such as Windows VM BSOD during VM restart and memory remapping. Hyperv page destory function can ensure hyperv page is destory during each VM shutdown so hyperv related config such as hypercall page is established correctly during each VM launch. Tracked-On: projectacrn#8755 Signed-off-by: Yichong Tang <[email protected]>
yichongt
requested review from
dongyaozu,
lifeix and
junjiemao1
as code owners
lifeix
approved these changes
Mar 10, 2025
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start to run premerge test |
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In current code process, hyperv data in struct vm_arch is never cleared during VM shutdown and is retained to next VM launch. As the enabled bit of hypercall_page msr is not clear, hypercall page might cause fatal error such as Windows VM BSOD during VM restart and memory remapping. Hyperv page destory function can ensure hyperv page is destory during each VM shutdown so hyperv related config such as hypercall page is established correctly during each VM launch.
Tracked-On: #8755