diff mbox series

parisc/pgtable: Do not drop upper 5 address bits of physical address

Message ID ZUo94MMlqzpUP/42@p100 (mailing list archive)
State Superseded
Headers show
Series parisc/pgtable: Do not drop upper 5 address bits of physical address | expand

Commit Message

Helge Deller Nov. 7, 2023, 1:38 p.m. UTC 
When calculating the pfn for the iitlbt/idtlbt instruction, do not
drop the upper 5 address bits. This doesn't seem to have an effect
on physical hardware which uses less physical address bits, but in
qemu the missing bits are visible.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc:  <stable@vger.kernel.org>
diff mbox series

Patch

diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index cab1ec23e0d7..bef64678d370 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -481,7 +481,7 @@ 
 #ifdef CONFIG_HUGETLB_PAGE
 	copy		\pte,\tmp
 	extrd,u		\tmp,(63-ASM_PFN_PTE_SHIFT)+(63-58)+PAGE_ADD_SHIFT,\
-				64-PAGE_SHIFT-PAGE_ADD_SHIFT,\pte
+				64-PAGE_SHIFT-PAGE_ADD_SHIFT+(63-58),\pte
 
 	depdi		_PAGE_SIZE_ENCODING_DEFAULT,63,\
 				(63-58)+PAGE_ADD_SHIFT,\pte
@@ -490,7 +490,7 @@ 
 				(63-58)+PAGE_ADD_HUGE_SHIFT,\pte
 #else /* Huge pages disabled */
 	extrd,u		\pte,(63-ASM_PFN_PTE_SHIFT)+(63-58)+PAGE_ADD_SHIFT,\
-				64-PAGE_SHIFT-PAGE_ADD_SHIFT,\pte
+				64-PAGE_SHIFT-PAGE_ADD_SHIFT+(63-58),\pte
 	depdi		_PAGE_SIZE_ENCODING_DEFAULT,63,\
 				(63-58)+PAGE_ADD_SHIFT,\pte
 #endif