[edk2-devel] [PATCH 1/2] OvmfPkg: start using the ECC plugin exception list
Laszlo Ersek
lersek at redhat.com
Fri Dec 4 03:21:15 UTC 2020
In the recent past, ECC has wreaked havoc at least twice:
- rejected Tom Lendacky's perfectly valid and clean code:
https://bugzilla.tianocore.org/show_bug.cgi?id=3008#c5
https://edk2.groups.io/g/devel/message/67097
- rejected James Bottomley's series for bogus reasons:
https://bugzilla.tianocore.org/show_bug.cgi?id=3077#c4
https://edk2.groups.io/g/devel/message/68302
There isn't capacity to improve ECC:
- Liming filed an ECC bug about the first case noted above, but it has
received no feedback in 25 days (as of this writing):
https://bugzilla.tianocore.org/show_bug.cgi?id=3060
And running CI or ECC on developer machines is difficult:
- I had to set up a separate VM for it,
- Shenglei gave Windows-based usage instructions only,
https://edk2.groups.io/g/devel/message/61966
- experimenting with a CI outside of a VM is somewhat risky:
https://github.com/tianocore/edk2-pytool-extensions/issues/231
ECC should be considered an experimental tool; I agreed to its enablement
in CI specifically because we were offered an exception list:
https://edk2.groups.io/g/devel/message/60961
https://www.redhat.com/archives/edk2-devel-archive/2020-June/msg00473.html
The github.com-based pull request process is already very inefficient for
both contributors and maintainers; it's time to put the ECC exception list
to use.
Now, I've tried adding those error codes that were reported against
James's series (after evaluating each entry in the report at
<https://dev.azure.com/tianocore/11ea4a10-ac9f-4e5f-8b13-7def1f19d478/_apis/build/builds/16071/logs/122>),
namely 4001, 4002, 5007, 8001, 8004, 8005. However, to my horror,
"EccCheck.ExceptionList" only supports the following format:
"<ErrorID>", "<KeyWord>", "<ErrorID>", "<KeyWord>", ...
where each pair binds a particular error ID to a particular "offending"
identifier, such as C variable name. There is no wildcard support, so it's
impossible to disable entire classes of ECC reports.
Therefore, I have to use "EccCheck.IgnoreFiles". It also doesn't support
the "." subdirectory or the "*" wildcard. But, with some sweat, I can
still use it to disable ECC for all of OvmfPkg.
Cc: Ard Biesheuvel <ard.biesheuvel at arm.com>
Cc: James Bottomley <jejb at linux.ibm.com>
Cc: Jordan Justen <jordan.l.justen at intel.com>
Cc: Philippe Mathieu-Daudé <philmd at redhat.com>
Cc: Tom Lendacky <thomas.lendacky at amd.com>
Signed-off-by: Laszlo Ersek <lersek at redhat.com>
---
OvmfPkg/OvmfPkg.ci.yaml | 49 ++++++++++++++++++++
1 file changed, 49 insertions(+)
diff --git a/OvmfPkg/OvmfPkg.ci.yaml b/OvmfPkg/OvmfPkg.ci.yaml
index 3128aefe9ed1..68d2de704d19 100644
--- a/OvmfPkg/OvmfPkg.ci.yaml
+++ b/OvmfPkg/OvmfPkg.ci.yaml
@@ -22,6 +22,55 @@
],
## Both file path and directory path are accepted.
"IgnoreFiles": [
+ "8254TimerDxe",
+ "8259InterruptControllerDxe",
+ "AcpiPlatformDxe",
+ "AcpiTables",
+ "AmdSev",
+ "AmdSevDxe",
+ "Bhyve",
+ "CompatImageLoaderDxe",
+ "CpuHotplugSmm",
+ "CpuS3DataDxe",
+ "Csm",
+ "EmuVariableFvbRuntimeDxe",
+ "EnrollDefaultKeys",
+ "Include",
+ "IncompatiblePciDeviceSupportDxe",
+ "IoMmuDxe",
+ "Library",
+ "LinuxInitrdDynamicShellCommand",
+ "LsiScsiDxe",
+ "MptScsiDxe",
+ "OvmfXenElfHeaderGenerator.c",
+ "PciHotPlugInitDxe",
+ "PlatformDxe",
+ "PlatformPei",
+ "PvScsiDxe",
+ "QemuFlashFvbServicesRuntimeDxe",
+ "QemuKernelLoaderFsDxe",
+ "QemuRamfbDxe",
+ "QemuVideoDxe",
+ "SataControllerDxe",
+ "Sec",
+ "SioBusDxe",
+ "SmbiosPlatformDxe",
+ "SmmAccess",
+ "SmmControl2Dxe",
+ "Tcg",
+ "Virtio10Dxe",
+ "VirtioBlkDxe",
+ "VirtioGpuDxe",
+ "VirtioNetDxe",
+ "VirtioPciDeviceDxe",
+ "VirtioRngDxe",
+ "VirtioScsiDxe",
+ "XenBusDxe",
+ "XenIoPciDxe",
+ "XenIoPvhDxe",
+ "XenPlatformPei",
+ "XenPvBlkDxe",
+ "XenTimerDxe"
]
},
## options defined .pytool/Plugin/CompilerPlugin
--
2.19.1.3.g30247aa5d201
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