summaryrefslogtreecommitdiff
path: root/drivers/irqchip
diff options
context:
space:
mode:
authorHeyi Guo <guoheyi@huawei.com>2019-11-30 10:38:49 +0300
committerMarc Zyngier <maz@kernel.org>2020-03-21 12:40:47 +0300
commitb2cb11f4f7643255b7703c0fcabc31a8ec478f3a (patch)
tree9f026900ded7539d9dc34386bbb6898e5a55b2c8 /drivers/irqchip
parent486562da598c59e9f835b551d7cf19507de2d681 (diff)
downloadlinux-b2cb11f4f7643255b7703c0fcabc31a8ec478f3a.tar.xz
irqchip/gic-v4: Use Inner-Shareable attributes for virtual pending tables
There is no special reason to set virtual LPI pending table as non-shareable. If we choose to hard code the shareability without probing, Inner-Shareable is likely to be a better choice, as the VPEs can move around and benefit from having the redistributors snooping each other's cache, if that's something they can do. Furthermore, Hisilicon hip08 ends up with unspecified errors when mixing shareability attributes. So let's move to IS attributes for the VPT. This has also been tested on D05 and didn't show any regression. Signed-off-by: Heyi Guo <guoheyi@huawei.com> [maz: rewrote commit message] Signed-off-by: Marc Zyngier <maz@kernel.org> Tested-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20191130073849.38378-1-guoheyi@huawei.com
Diffstat (limited to 'drivers/irqchip')
-rw-r--r--drivers/irqchip/irq-gic-v3-its.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index bb80285998b5..bc5b3f6e6f2b 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -3560,7 +3560,7 @@ static void its_vpe_schedule(struct its_vpe *vpe)
val = virt_to_phys(page_address(vpe->vpt_page)) &
GENMASK_ULL(51, 16);
val |= GICR_VPENDBASER_RaWaWb;
- val |= GICR_VPENDBASER_NonShareable;
+ val |= GICR_VPENDBASER_InnerShareable;
/*
* There is no good way of finding out if the pending table is
* empty as we can race against the doorbell interrupt very