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GICR_INVALLR, Redistributor Invalidate All Register

The GICR_INVALLR characteristics are:


Invalidates any cached configuration data of all physical LPIs, causing the GIC to reload the interrupt configuration from the physical LPI Configuration table at the address specified by GICR_PROPBASER.


A copy of this register is provided for each Redistributor.


GICR_INVALLR is a 64-bit register.

Field descriptions

The GICR_INVALLR bit assignments are:


Bits [63:0]

Reserved, RES0.


If any LPI has been forwarded to the PE and a valid write to GICR_INVALLR is received, the Redistributor must ensure it reloads its properties from memory. This has no effect on the forwarded LPI if it has already been activated.

Accessing the GICR_INVALLR

This register is mandatory in an implementation that supports LPIs and does not include an ITS. The functionality is IMPLEMENTATION DEFINED in an implementation that does include an ITS.

Writes to this register have no effect if no physical LPIs are currently stored in the local Redistributor cache.

GICR_INVALLR can be accessed through the memory-mapped interfaces:

GIC RedistributorRD_base0x00B0GICR_INVALLR

This interface is accessible as follows:

  • When GICD_CTLR.DS == 0b0 access to this register is WO.
  • When IsAccessSecure() access to this register is WO.
  • When !IsAccessSecure() access to this register is WO.