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| author |  Aaron Lewis <aaronlewis@google.com>
| 2021-06-23 20:34:27 +0000 |
|---|---|---|
| committer |  Paolo Bonzini <pbonzini@redhat.com>
| 2021-06-24 18:00:49 -0400 |
| commit | 88213da2351479c529c368a9b763c4d52f02255b (patch) | |
| tree | 66b176dbc02246d968e296ec41ff844d32797632 /arch | |
| parent | selftests: kvm: Allows userspace to handle emulation errors. (diff) | |
| download | linux-88213da2351479c529c368a9b763c4d52f02255b.tar.gz linux-88213da2351479c529c368a9b763c4d52f02255b.tar.bz2 linux-88213da2351479c529c368a9b763c4d52f02255b.zip | |
kvm: x86: disable the narrow guest module parameter on unload
When the kvm_intel module unloads the module parameter
'allow_smaller_maxphyaddr' is not cleared because the backing variable is
defined in the kvm module. As a result, if the module parameter's state
was set before kvm_intel unloads, it will also be set when it reloads.
Explicitly clear the state in vmx_exit() to prevent this from happening.
Signed-off-by: Aaron Lewis <aaronlewis@google.com>
Message-Id: <20210623203426.1891402-1-aaronlewis@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 5a1067c42f3a..104bbbe2dfd0 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -7925,6 +7925,8 @@ static void vmx_exit(void) } #endif vmx_cleanup_l1d_flush(); + + allow_smaller_maxphyaddr = false; } module_exit(vmx_exit); |