<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE register_page SYSTEM "registers.dtd">
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<register_page>
  <registers>
  
    <register execution_state="AArch32" is_register="False" is_internal="True" is_stub_entry="False">
      <reg_short_name>TLBIMVAALIS</reg_short_name>
        
        <reg_long_name>TLB Invalidate by VA, All ASID, Last level, Inner Shareable</reg_long_name>



      
            <reg_condition otherwise="UNDEFINED">when FEAT_AA32EL1 is implemented</reg_condition>
      




          <reg_reset_value></reg_reset_value>

      <reg_mappings>
        




      </reg_mappings>

        <reg_purpose>
          
    
      <purpose_text>
        <para>Invalidate all cached copies of translation table entries from TLBs that meet the following requirements:</para>

      </purpose_text>
      <purpose_text>
        <list type="unordered">
<listitem><content>The entry is a stage 1 translation table entry, from the final level of the translation table walk.</content>
</listitem><listitem><content>The entry would be used to translate the specified address.</content>
</listitem><listitem><content>If EL2 is implemented and enabled in the current Security state, the entry would be used with the current VMID.</content>
</listitem></list>

      </purpose_text>
      <purpose_text>
        <para>From the entries that match these requirements, the entries that are invalidated are required for the following translation regime:</para>

      </purpose_text>
      <purpose_text>
        <list type="unordered">
<listitem><content>If executed at Secure EL1 when EL3 is using AArch64, the Secure EL1&amp;0 translation regime.</content>
</listitem><listitem><content>If executed in Secure state when EL3 is using AArch32, the Secure PL1&amp;0 translation regime.</content>
</listitem><listitem><content>If executed in Non-secure state, the Non-secure PL1&amp;0 translation regime.</content>
</listitem></list>

      </purpose_text>
      <purpose_text>
        <para>The invalidation applies to all PEs in the same Inner Shareable shareability domain as the PE that executes this System instruction.</para>
      </purpose_text>

        </reg_purpose>

      <reg_groups>
            <reg_group>TLB</reg_group>
      </reg_groups>
      <reg_configuration>
        
    
      <configuration_text>
        <note><para>This System instruction is not implemented in architecture versions before Armv8.</para></note>
      </configuration_text>

      </reg_configuration>
      
      
        
      <reg_attributes>
          
    
      <attributes_text>
        <para>TLBIMVAALIS is a 32-bit System instruction.</para>
      </attributes_text>

      </reg_attributes>
      <reg_fieldsets>
        






<fields id="fieldset_0" length="32">
  <text_before_fields/>
  <field id="fieldset_0-31_12" has_partial_fieldset="False" is_linked_to_partial_fieldset="False" is_access_restriction_possible="False" is_variable_length="False" is_constant_value="False" is_partial_field="False" is_conditional_field_name="False">
    <field_name>VA</field_name>
    <field_msb>31</field_msb>
    <field_lsb>12</field_lsb>
    <rel_range>31:12</rel_range>
    <field_description order="before">
      <para>Virtual address to match. Any unlocked TLB entries that match the VA will be affected by this System instruction, regardless of the ASID.</para>
    </field_description>
  </field>
  <field id="fieldset_0-11_0" has_partial_fieldset="False" is_linked_to_partial_fieldset="False" is_access_restriction_possible="False" is_variable_length="False" is_constant_value="False" is_partial_field="False" is_conditional_field_name="False" rwtype="RES0">
    <field_msb>11</field_msb>
    <field_lsb>0</field_lsb>
    <rel_range>11:0</rel_range>
    <field_description order="before"/>
    <field_description order="before">
      <para>Reserved, <arm-defined-word>RES0</arm-defined-word>.</para>
    </field_description>
  </field>
  <text_after_fields/>
</fields>




<reg_fieldset length="32">
  <fieldat id="fieldset_0-31_12" msb="31" lsb="12"/>
  <fieldat id="fieldset_0-11_0" msb="11" lsb="0"/>
</reg_fieldset>


      </reg_fieldsets>

      <access_mechanisms>
          


  
    
      <access_permission_text>
        <para>The following pseudocode describes traps which apply to the System instruction. For information about changes to the scope of the invalidation to the instruction under different conditions, see the relevant instruction in the <xref linkend="#shared_pseudocode.aarch32">Pseudocode for AArch32 operation</xref>.</para>
      </access_permission_text>





    
        
        <access_mechanism accessor="MCR TLBIMVAALIS" type="SystemAccessor">
            <encoding>
            <access_instruction>MCR{&lt;c&gt;}{&lt;q&gt;} &lt;coproc&gt;, {#}&lt;opc1&gt;, &lt;Rt&gt;, &lt;CRn&gt;, &lt;CRm&gt;{, {#}&lt;opc2&gt;}</access_instruction>
                
                <enc n="coproc" v="0b1111"/>
                
                <enc n="opc1" v="0b000"/>
                
                <enc n="CRn" v="0b1000"/>
                
                <enc n="CRm" v="0b0011"/>
                
                <enc n="opc2" v="0b111"/>
            </encoding>
            <access_permission>
                <ps name="MCR" sections="1" secttype="access_permission">
                <pstext>
if !IsFeatureImplemented(FEAT_AA32EL1) then
    Undefined();
elsif PSTATE.EL == EL0 then
    Undefined();
elsif PSTATE.EL == EL1 then
    if EL2Enabled() &amp;&amp; IsFeatureImplemented(FEAT_AA64EL2) &amp;&amp; !ELUsingAArch32(EL2) &amp;&amp; HSTR_EL2().T8 == '1' then
        AArch64_AArch32SystemAccessTrap(EL2, 0x03);
    elsif EL2Enabled() &amp;&amp; IsFeatureImplemented(FEAT_AA32EL2) &amp;&amp; ELUsingAArch32(EL2) &amp;&amp; HSTR().T8 == '1' then
        AArch32_TakeHypTrapException(0x03);
    elsif EL2Enabled() &amp;&amp; IsFeatureImplemented(FEAT_AA64EL2) &amp;&amp; !ELUsingAArch32(EL2) &amp;&amp; HCR_EL2().TTLB == '1' then
        AArch64_AArch32SystemAccessTrap(EL2, 0x03);
    elsif EL2Enabled() &amp;&amp; IsFeatureImplemented(FEAT_AA64EL2) &amp;&amp; !ELUsingAArch32(EL2) &amp;&amp; HCR_EL2().TTLBIS == '1' then
        AArch64_AArch32SystemAccessTrap(EL2, 0x03);
    elsif EL2Enabled() &amp;&amp; IsFeatureImplemented(FEAT_AA32EL2) &amp;&amp; ELUsingAArch32(EL2) &amp;&amp; HCR().TTLB == '1' then
        AArch32_TakeHypTrapException(0x03);
    elsif EL2Enabled() &amp;&amp; IsFeatureImplemented(FEAT_AA32EL2) &amp;&amp; ELUsingAArch32(EL2) &amp;&amp; HCR2().TTLBIS == '1' then
        AArch32_TakeHypTrapException(0x03);
    else
        AArch32_TLBI_VAA(SecurityStateAtEL(EL1), Regime_EL10, VMID(), Broadcast_ISH, TLBILevel_Last, TLBI_AllAttr, R(t));
    end;
elsif PSTATE.EL == EL2 then
    AArch32_TLBI_VAA(SecurityStateAtEL(EL1), Regime_EL10, VMID(), Broadcast_ISH, TLBILevel_Last, TLBI_AllAttr, R(t));
elsif PSTATE.EL == EL3 then
    AArch32_TLBI_VAA(SecurityStateAtEL(EL3), Regime_EL30, VMID_NONE, Broadcast_ISH, TLBILevel_Last, TLBI_AllAttr, R(t));
end;
                </pstext>
                </ps>
            </access_permission>
        </access_mechanism>

      </access_mechanisms>

      <arch_variants>
      </arch_variants>
  </register>
</registers>
<timestamp>2026-03-26 20:27:25</timestamp>
<commit_id>2026-03_rel</commit_id>
</register_page>