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The VDFSR provides the syndrome value reported to software on taking a virtual SError interrupt exception.
VDFSR is a 32-bit register, and is part of :
Asynchronous Error Type. Describes the state of the core after taking a virtual SError interrupt exception. Software might use the information in the syndrome registers to determine what recovery might be possible. The value is:
Uncorrected error, Unrecoverable error (UEU).
External abort type.
This register is only used for external aborts.
AArch32 System register VDFSR is architecturally mapped to AArch64 System register VSESR_EL2 [31:0]. See B2.108 VSESR_EL2, Virtual SError Exception Syndrome Register.
Bit fields and details not provided in this description are architecturally defined. See the Arm® Architecture Reference Manual Armv8, for Armv8-A architecture profile.