| From 65ca9165e380b30882032558f11867a368fbe402 Mon Sep 17 00:00:00 2001 |
| From: Rajat Jain <rajatja@google.com> |
| Date: Mon, 15 Jun 2020 18:17:42 -0700 |
| Subject: [PATCH] FROMLIST: pci: export untrusted attribute in sysfs |
| |
| This is needed to allow the userspace to determine when an untrusted |
| device has been added, and thus allowing it to bind the driver manually |
| to it, if it so wishes. This is being done as part of the approach |
| discussed at https://lkml.org/lkml/2020/6/9/1331 |
| |
| Signed-off-by: Rajat Jain <rajatja@google.com> |
| (am from https://patchwork.kernel.org/patch/11606125/) |
| (also found at https://lore.kernel.org/r/20200616011742.138975-4-rajatja@google.com) |
| |
| BUG=b:171541662, b:167448768 |
| TEST=Check that userspace can identify untrusted devices to remove them |
| on user logoff. |
| |
| Change-Id: Ie196a410bf227d2fe7ebd55da24e62d175720d9d |
| Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/2511510 |
| Tested-by: Rajat Jain <rajatja@google.com> |
| Commit-Queue: Rajat Jain <rajatja@google.com> |
| Reviewed-by: Sean Paul <seanpaul@chromium.org> |
| Reviewed-by: Todd Broch <tbroch@chromium.org> |
| --- |
| drivers/pci/pci-sysfs.c | 2 ++ |
| 1 file changed, 2 insertions(+) |
| |
| diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c |
| index 0a2eeb82cebde8149c9c9b46bf2d72dfbae132ca..48bfd83922048d00db2afc64f388059692e91f8b 100644 |
| --- a/drivers/pci/pci-sysfs.c |
| +++ b/drivers/pci/pci-sysfs.c |
| @@ -51,6 +51,7 @@ pci_config_attr(subsystem_vendor, "0x%04x\n"); |
| pci_config_attr(subsystem_device, "0x%04x\n"); |
| pci_config_attr(revision, "0x%02x\n"); |
| pci_config_attr(class, "0x%06x\n"); |
| +pci_config_attr(untrusted, "%u\n"); |
| |
| static ssize_t irq_show(struct device *dev, |
| struct device_attribute *attr, |
| @@ -619,6 +620,7 @@ static struct attribute *pci_dev_attrs[] = { |
| #endif |
| &dev_attr_driver_override.attr, |
| &dev_attr_ari_enabled.attr, |
| + &dev_attr_untrusted.attr, |
| NULL, |
| }; |
| |
| -- |
| 2.38.1.584.g0f3c55d4c2-goog |
| |
