Commit c6ea2f56 authored Jan 06, 2023 by Zheng Chongzhen Committed by guzitao Mar 01, 2023

sw64: iommu: fix the mask of physical address when flushing pcache

Sunway inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I6ILC2



--------------------------------

PCACHE_FLUSHPADDR reg specifies addr[47:7] of the physical address
of the pte to be flushed, and other bits reserved, so we can write
the physical address directly into the reg.

Signed-off-by: Zheng Chongzhen <zhengchongzhen@wxiat.com>
Reviewed-by: He Sheng <hesheng@wxiat.com>
Signed-off-by: Gu Zitao <guzitao@wxiat.com>

parent d703008e

drivers/iommu/sw64/sunway_iommu.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -167,7 +167,7 @@ flush_device_tlb(struct sunway_iommu_domain *sdomain,

		switch (hflush_addr) {
		case PCACHE_FLUSHPADDR:
		flush_addr = __pa(flush_addr) & 0xffffffff80;
		flush_addr = __pa(flush_addr);
		/* Set memory bar here */
		mb();
		write_piu_ior0(hose->node, hose->index,