The 'LUN encoding in CDB' feature of UefiScsiLib violates the SBC-3 and causes actual breakage on SCSI disks with nonzero LUNs that are emulated by QEMU.
The first patch makes this (very small) part of UefiScsiLib dependent on a new MdePkg Feature PCD, and keeps the default behavior intact. The second patch turns off the 'LUN encoding in CDB' feature for OvmfPkg. The third patch does the same for ArmVirtualizationQemu. Public branch: https://github.com/lersek/edk2/commits/bz1166971_rdwrvr_cdb_lun_encode RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1166971 Thanks, Laszlo Laszlo Ersek (3): MdePkg: UefiScsiLib: turn 'LUN encoding in CDB' into an explicit feature OvmfPkg: turn off 'LUN encoding in CDB' SCSI feature ArmPlatformPkg: ArmVirtualizationQemu: turn off 'LUN encoding in CDB' SCSI feature MdePkg/Library/UefiScsiLib/UefiScsiLib.inf | 2 ++ MdePkg/Library/UefiScsiLib/UefiScsiLib.c | 16 ++++++++++++---- .../ArmVirtualizationPkg/ArmVirtualizationQemu.dsc | 2 ++ MdePkg/MdePkg.dec | 9 +++++++++ OvmfPkg/OvmfPkgIa32.dsc | 1 + OvmfPkg/OvmfPkgIa32X64.dsc | 1 + OvmfPkg/OvmfPkgX64.dsc | 1 + 7 files changed, 28 insertions(+), 4 deletions(-) -- 1.8.3.1 ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ edk2-devel mailing list edk2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/edk2-devel
