The patch titled
PCIe AER: reject aer inject if hardware mask error reporting
has been added to the -mm tree. Its filename is
pcie-aer-reject-aer-inject-if-hardware-mask-error-reporting.patch
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Subject: PCIe AER: reject aer inject if hardware mask error reporting
From: "Youquan,Song" <youquan.song@xxxxxxxxxxxxxxx>
Correcteable/Uncorrectable Error Mask Register are used by PCIe AER driver
which will controls the reporting of idividual errors to PCIe RC via PCIe
error messages.
If hardware masks special error reporting to RC, the aer_inject driver
should not inject aer error.
Signed-off-by: Youquan, Song <youquan.song@xxxxxxxxx>
Acked-by: Ying, Huang <ying.huang@xxxxxxxxx>
Cc: Andrew Patterson <andrew.patterson@xxxxxx>
Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Acked-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/pci/pcie/aer/aer_inject.c | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff -puN drivers/pci/pcie/aer/aer_inject.c~pcie-aer-reject-aer-inject-if-hardware-mask-error-reporting drivers/pci/pcie/aer/aer_inject.c
--- a/drivers/pci/pcie/aer/aer_inject.c~pcie-aer-reject-aer-inject-if-hardware-mask-error-reporting
+++ a/drivers/pci/pcie/aer/aer_inject.c
@@ -321,7 +321,7 @@ static int aer_inject(struct aer_error_i
unsigned long flags;
unsigned int devfn = PCI_DEVFN(einj->dev, einj->fn);
int pos_cap_err, rp_pos_cap_err;
- u32 sever;
+ u32 sever, mask;
int ret = 0;
dev = pci_get_domain_bus_and_slot((int)einj->domain, einj->bus, devfn);
@@ -374,6 +374,24 @@ static int aer_inject(struct aer_error_i
err->header_log2 = einj->header_log2;
err->header_log3 = einj->header_log3;
+ pci_read_config_dword(dev, pos_cap_err + PCI_ERR_COR_MASK, &mask);
+ if (einj->cor_status && !(einj->cor_status & ~mask)) {
+ ret = -EINVAL;
+ printk(KERN_WARNING "The correctable error(s) is masked "
+ "by device\n");
+ spin_unlock_irqrestore(&inject_lock, flags);
+ goto out_put;
+ }
+
+ pci_read_config_dword(dev, pos_cap_err + PCI_ERR_UNCOR_MASK, &mask);
+ if (einj->uncor_status && !(einj->uncor_status & ~mask)) {
+ ret = -EINVAL;
+ printk(KERN_WARNING "The uncorrectable error(s) is masked "
+ "by device\n");
+ spin_unlock_irqrestore(&inject_lock, flags);
+ goto out_put;
+ }
+
rperr = __find_aer_error_by_dev(rpdev);
if (!rperr) {
rperr = rperr_alloc;
_
Patches currently in -mm which might be from youquan.song@xxxxxxxxxxxxxxx are
pcie-aer-fix-aer-inject-result-in-kernel-oops.patch
pcie-aer-reject-aer-inject-if-hardware-mask-error-reporting.patch
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