parisc: Fix comment describing setup of access rights in entry.S
This comment describes incredibly subtle code, so it should be right! Signed-off-by: John David Anglin <dave.anglin@bell.net> Signed-off-by: Helge Deller <deller@gmx.de>
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@ -483,7 +483,7 @@
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* B <-> _PAGE_DMB (memory break)
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*
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* Then incredible subtlety: The access rights are
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* _PAGE_GATEWAY _PAGE_EXEC _PAGE_READ
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* _PAGE_GATEWAY, _PAGE_EXEC and _PAGE_WRITE
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* See 3-14 of the parisc 2.0 manual
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*
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* Finally, _PAGE_READ goes in the top bit of PL1 (so we
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@ -493,7 +493,7 @@
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/* PAGE_USER indicates the page can be read with user privileges,
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* so deposit X1|11 to PL1|PL2 (remember the upper bit of PL1
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* contains _PAGE_READ */
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* contains _PAGE_READ) */
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extrd,u,*= \pte,_PAGE_USER_BIT+32,1,%r0
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depdi 7,11,3,\prot
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/* If we're a gateway page, drop PL2 back to zero for promotion
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