KVM: VMX: Read 32-bit GPR values for ENCLS instructions outside of 64-bit mode

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When getting register values for ENCLS emulation, use kvm_register_read()
instead of kvm_<reg>_read() so that bits 63:32 of the register are dropped
if the guest is in 32-bit mode.

Note, the misleading/surprising behavior of kvm_<reg>_read() being "raw"
variants under the hood will be addressed once all non-benign bugs are
fixed.

Fixes: 70210c044b ("KVM: VMX: Add SGX ENCLS[ECREATE] handler to enforce CPUID restrictions")
Fixes: b6f084ca55 ("KVM: VMX: Add ENCLS[EINIT] handler to support SGX Launch Control (LC)")
Acked-by: Kai Huang <kai.huang@intel.com>
Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com>
Link: https://patch.msgid.link/20260529222223.870923-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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This commit is contained in:

Sean Christopherson 2026-05-29 15:21:47 -07:00

parent 9377016c2f

commit f43caad54c

1 changed files with 5 additions and 5 deletions

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arch/x86/kvm/vmx/sgx.c

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