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lersek queue 2020-Apr-01 #491
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REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2642 This patch resolves the problem of using memory protection attributes when OVMF firmware is compiled with XCODE5 and CLANGPDB. Cc: Andrew Fish <afish@apple.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Marvin Häuser <mhaeuser@outlook.de> Signed-off-by: Vitaly Cheptsov <vit9696@protonmail.com> Message-Id: <20200329132158.35259-2-cheptsov@ispras.ru> Acked-by: Laszlo Ersek <lersek@redhat.com> [lersek@redhat.com: fix whitespace issues reported by git-am] [lersek@redhat.com: replace "CC:" tags with "Cc:" ones for PatchCheck.py]
When DHCP is misconfigured on a network segment, such that two DHCP servers attempt to reply to requests (and therefore race with each other), the edk2 PXE client can confuse itself. In PxeBcDhcp4BootInfo() / PxeBcDhcp6BootInfo(), the client may refer to a DHCP reply packet as an "earlier" packet from the "same" DHCP server, when in reality both packets are unrelated, and arrive from different DHCP servers. While the edk2 PXE client can do nothing to fix this, it should at least not ASSERT() -- ASSERT() is for catching programming errors (violations of invariants that are under the control of the programmer). ASSERT()s should in particular not refer to external data (such as network packets). What's more, in RELEASE builds, we get NULL pointer references. Check the problem conditions with actual "if"s, and return EFI_PROTOCOL_ERROR. This will trickle out to PxeBcLoadBootFile(), and be reported as "PXE-E99: Unexpected network error". Cc: Jiaxin Wu <jiaxin.wu@intel.com> Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com> Cc: Philippe Mathieu-Daudé <philmd@redhat.com> Cc: Siyuan Fu <siyuan.fu@intel.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Message-Id: <20200331004749.16128-1-lersek@redhat.com> Reviewed-by: Siyuan Fu <siyuan.fu@intel.com> Reviewed-by: Maciej Rabeda <maciej.rabeda@linux.intel.com>
Laszlo suggested that as I have contributed the OvmfPkg PVSCSI driver, I will also register myself as a reviewer in Maintainers.txt. In addition, as Nikita have assisted the development of the PVSCSI driver and have developed another similar OvmfPkg SCSI driver, add him as a reviewer to PVSCSI driver as-well. Cc: Nikita Leshenko <nikita.leshchenko@oracle.com> Suggested-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Liran Alon <liran.alon@oracle.com> Message-Id: <20200331110244.51409-1-liran.alon@oracle.com> Reviewed-by: Nikita Leshenko <nikita.leshchenko@oracle.com> [lersek@redhat.com: fixup "F:" pattern by appending slash character] Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Sean reported that VS2019 build produce the following build error: INFO - PvScsi.c INFO - Generating code INFO - d:\a\1\s\OvmfPkg\PvScsiDxe\PvScsi.c(459): error C2220: the following warning is treated as an error INFO - d:\a\1\s\OvmfPkg\PvScsiDxe\PvScsi.c(459): warning C4244: '=': conversion from 'const UINT16' to 'UINT8', possible loss of data This result from an implicit cast from PVSCSI Response->ScsiStatus (Which is UINT16) to Packet->TargetResponse (Which is UINT8). Fix this issue by adding an appropriate explicit cast and verify with assert that this truncation do not result in loss of data. Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2651 Reported-by: Sean Brogan <sean.brogan@microsoft.com> Signed-off-by: Liran Alon <liran.alon@oracle.com> Message-Id: <20200331110452.51992-1-liran.alon@oracle.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> [lersek@redhat.com: rewrap VS2019 diags in commit msg for PatchCheck.py]
Previous to this change, PvScsiFreeRings() was not undoing all operations that was done by PvScsiInitRings(). This is because PvScsiInitRings() was both preparing rings (Allocate memory and map it for device DMA) and setup the rings against device by issueing a device command. While PvScsiFreeRings() only unmaps the rings and free their memory. Driver do not have a functional error as it makes sure to reset device before every call site to PvScsiFreeRings(). However, this is not intuitive. Therefore, prefer to refactor the setup of the ring against device to a separate function than PvScsiInitRings(). Signed-off-by: Liran Alon <liran.alon@oracle.com> Message-Id: <20200331225637.123318-1-liran.alon@oracle.com> [lersek@redhat.com: rename FreeDMACommBuffer label to FreeDmaCommBuffer] Reviewed-by: Laszlo Ersek <lersek@redhat.com>
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[edk2-devel] [PATCH 1/1] OvmfPkg: Fix SMM/RT driver section alignment for XCODE5/CLANGPDB
https://edk2.groups.io/g/devel/message/56559
http://mid.mail-archive.com/20200329132158.35259-2-cheptsov@ispras.ru
[edk2-devel] [PATCH] NetworkPkg/UefiPxeBcDxe: handle competing DHCP servers (more) gracefully
https://edk2.groups.io/g/devel/message/56699
http://mid.mail-archive.com/20200331004749.16128-1-lersek@redhat.com
[edk2-devel] [PATCH] Maintainers.txt: Add Liran and Nikita as OvmfPkg/PvScsiDxe reviewers
https://edk2.groups.io/g/devel/message/56746
http://mid.mail-archive.com/20200331110244.51409-1-liran.alon@oracle.com
[edk2-devel] [PATCH] OvmfPkg/PvScsiDxe: Fix VS2019 build error because of implicit cast
https://edk2.groups.io/g/devel/message/56747
http://mid.mail-archive.com/20200331110452.51992-1-liran.alon@oracle.com
[edk2-devel] [PATCH v2] OvmfPkg/PvScsiDxe: Refactor setup of rings to separate function
https://edk2.groups.io/g/devel/message/56794
http://mid.mail-archive.com/20200331225637.123318-1-liran.alon@oracle.com