x86: no CPA on iounmap
When an ioremap is unmapped, do not change the page attributes. There might be another mapping of the same physical address. PAT might detect a conflicting mapping attribute for no good reason. The mapping is removed anyway. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -240,9 +240,6 @@ void iounmap(volatile void __iomem *addr)
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return;
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return;
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}
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}
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/* Reset the direct mapping. Can block */
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ioremap_change_attr(p->phys_addr, p->size, IOR_MODE_CACHED);
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/* Finally remove it */
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/* Finally remove it */
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o = remove_vm_area((void *)addr);
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o = remove_vm_area((void *)addr);
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BUG_ON(p != o || o == NULL);
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BUG_ON(p != o || o == NULL);
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