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powerpc/book3e: Use way 3 for linear mapping bolted entry
An erratum on A2 can lead to the bolted entry we insert for the linear mapping being evicted, to avoid that write the bolted entry to way 3. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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1 changed files with 3 additions and 2 deletions
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@ -864,8 +864,9 @@ have_hes:
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* that will have to be made dependent on whether we are running under
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* a hypervisor I suppose.
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*/
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ori r3,r3,MAS0_HES | MAS0_WQ_ALLWAYS
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mtspr SPRN_MAS0,r3
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ori r11,r3,MAS0_WQ_ALLWAYS
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oris r11,r11,MAS0_ESEL(3)@h /* Use way 3: workaround A2 erratum 376 */
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mtspr SPRN_MAS0,r11
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lis r3,(MAS1_VALID | MAS1_IPROT)@h
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ori r3,r3,BOOK3E_PAGESZ_1GB << MAS1_TSIZE_SHIFT
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mtspr SPRN_MAS1,r3
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