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This is required for running armvirt_32 on QEMU 3.0 [1], otherwise the
kernel will emit the following complaint and virtio-net-pci devices will
fail to be initialized
[ 1.124214] OF: PCI: host bridge /pcie@10000000 ranges:
[ 1.125093] OF: PCI: IO 0x3eff0000..0x3effffff -> 0x00000000
[ 1.125942] OF: PCI: MEM 0x10000000..0x3efeffff -> 0x10000000
[ 1.126403] OF: PCI: MEM 0x8000000000..0xffffffffff -> 0x8000000000
[ 1.127748] pci-host-generic 4010000000.pcie: can't claim ECAM area [mem 0x10000000-0x1fffffff]: address conflict with /pcie@10000000 [mem 0x10000000-0x3efeffff]
[ 1.129752] pci-host-generic: probe of 4010000000.pcie failed with error -16
Running QEMU with "-M virt,highmem=off" is an option, but "highmem" was only
introduced as a default on flag since QEMU 2.5.0 and QEMU will fail and quit on
encounter of unknown flags
[1] Armv7 guest fails to boot with qemu-3.0.0-1,
https://bugzilla.redhat.com/show_bug.cgi?id=1633328#c5
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
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The diff was genereated by running the following command without
actually changing any kernel config options
make kernel_menuconfig CONFIG_TARGET=subtarget
Here are some initial findings on the change
- CONFIG_ARCH_OPTIONAL_KERNEL_RWX is now arch default
- CONFIG_ARM_GIC_V3_ITS is selected by CONFIG_ARCH_VIRT
- CONFIG_CPU_SPECTRE is select by CONFIG_CPU_V7
- CONFIG_TIMER_OF is now a arch default
- CONFIG_TIMER_PROBE is select by CONFIG_TIMER_OF
The following options should probably be moved to generic config
- CONFIG_MIGRATION is a default on option
- CONFIG_TREE_SRCU is a default on option for !PREEMPT && SMP system
- CONFIG_RCU_NEED_SEGCBLIST
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
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Refreshed all patches.
Altered patches:
- 666-Add-support-for-MAP-E-FMRs-mesh-mode.patch
New symbol for arm targets:
- HARDEN_BRANCH_PREDICTOR
Compile-tested on: ar71xx, cns3xxx, imx6
Runtime-tested on: ar71xx, cns3xxx, imx6
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
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It was originally only enabled for the "32" subtarget along with the
"usb" feature which is now also shared by the "64" target
This should fix the phase1 build of armvirt/64
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
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Original armvirt target is now subtarget 32. Other than that the built
result should remain the same as before
Besides old features already available with arm64, the new armvirt/64
subtarget will also have those features originally enabled for
armvirt/32 with commit 44ecfc2 ("armvirt: new target")
- pl011, uart
- pl031, rtc
- pl061, gpio
- pci-host-generic
- virtio_{mmio,pci,net,blk,scsi,9p,console,balloon}
- smp with NR_CPUS=4
- cpu-hotplug
- ext4
- DEBUG_BUGVERBOSE for debug purposes
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
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