6.4-stable review patch. If anyone has any objections, please let me know.
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From: Rex Zhang rex.zhang@intel.com
[ Upstream commit 50c5e6f41d5ad7c731c31135a30d0e4f0e4fea26 ]
Kernel PASID and user PASID are separately enabled. User needs to know the user PASID enabling status to decide how to use IDXD device in user space. This is done via the attribute /sys/bus/dsa/devices/dsa0/pasid_enabled. It's unnecessary for user to know the kernel PASID enabling status because user won't use the kernel PASID. But instead of showing the user PASID enabling status, the attribute shows the kernel PASID enabling status. Fix the issue by showing the user PASID enabling status in the attribute.
Fixes: 42a1b73852c4 ("dmaengine: idxd: Separate user and kernel pasid enabling") Signed-off-by: Rex Zhang rex.zhang@intel.com Acked-by: Fenghua Yu fenghua.yu@intel.com Acked-by: Dave Jiang dave.jiang@intel.com Link: https://lore.kernel.org/r/20230614062706.1743078-1-rex.zhang@intel.com Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/dma/idxd/sysfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c index 293739ac55969..b6a0a12412afd 100644 --- a/drivers/dma/idxd/sysfs.c +++ b/drivers/dma/idxd/sysfs.c @@ -1480,7 +1480,7 @@ static ssize_t pasid_enabled_show(struct device *dev, { struct idxd_device *idxd = confdev_to_idxd(dev);
- return sysfs_emit(buf, "%u\n", device_pasid_enabled(idxd)); + return sysfs_emit(buf, "%u\n", device_user_pasid_enabled(idxd)); } static DEVICE_ATTR_RO(pasid_enabled);