From: Helge Deller <deller@gmx.de>
To: linux-parisc@vger.kernel.org
Subject: [PATCH] parisc/pgtable: Do not drop upper 5 address bits of physical address
Date: Tue, 7 Nov 2023 14:38:40 +0100 [thread overview]
Message-ID: <ZUo94MMlqzpUP/42@p100> (raw)
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 --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
reply other threads:[~2023-11-07 13:38 UTC|newest]
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