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qemu-v8: Use cpu as cortex-a57 for XEN_BOOT
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XEN fails to boot linux when cpu is selected as max with following
kernel crash. Hence revert to using cortex-a57 when XEN_BOOT is
selected.

[    0.000000] ------------[ cut here ]------------
[    0.000000] kernel BUG at arch/arm64/kernel/traps.c:498!
[    0.000000] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[    0.000000] Modules linked in:
[    0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.16.0-gdbeb6ea978fc #1
[    0.000000] Hardware name: linux,dummy-virt (DT)
[    0.000000] pstate: 000000c5 (nzcv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[    0.000000] pc : do_undefinstr+0x2bc/0x2e0
[    0.000000] lr : do_undefinstr+0x2c8/0x2e0
[    0.000000] sp : ffffd399cddc3c60
[    0.000000] x29: ffffd399cddc3c60 x28: ffffd399cddd34c0 x27: 0000000000000000
[    0.000000] x26: 0000000000000000 x25: 0000000000000000 x24: ffffd399cd830008
[    0.000000] x23: 00000000000000c5 x22: ffffd399cd7810bc x21: ffffd399cddc3e30
[    0.000000] x20: 00000000d5182101 x19: ffffd399cddc3ce0 x18: 0000000000000014
[    0.000000] x17: 0000000049426f60 x16: 0000000056a84232 x15: 0000000099ac15ae
[    0.000000] x14: 00000000ab810c49 x13: 501bac190a4c3eb1 x12: 89c8a6a0aab2e7c5
[    0.000000] x11: 00000000c16d9c19 x10: 00000000e4fb46a5 x9 : 00000000d78a73db
[    0.000000] x8 : 0000000000000014 x7 : 501bac190a4c3eb1 x6 : 89c8a6a0aab2e7c5
[    0.000000] x5 : ffffd399cddd5910 x4 : 0000000000000000 x3 : ffffd399ce0e70f8
[    0.000000] x2 : 0000000000000000 x1 : ffffd399cddd34c0 x0 : 00000000000000c5
[    0.000000] Call trace:
[    0.000000]  do_undefinstr+0x2bc/0x2e0
[    0.000000]  el1_undef+0x2c/0x4c
[    0.000000]  el1h_64_sync_handler+0x84/0xd0
[    0.000000]  el1h_64_sync+0x78/0x7c
[    0.000000]  start_kernel+0x4c4/0x664
[    0.000000]  __primary_switched+0xc0/0xc8
[    0.000000] Code: 17ffff8d a9425bf5 17ffffb1 a9025bf5 (d4210000)
[    0.000000] ---[ end trace 32823fcd1957a64b ]---
[    0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
[    0.000000] ---[ end Kernel panic - not syncing: Attempted to kill the idle task! ]---

Signed-off-by: Ruchika Gupta <[email protected]>
Reviewed-by: Jerome Forissier <[email protected]>
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@ruchi393 @jforissier
ruchi393 authored and jforissier committed Jan 25, 2022
1 parent 56d18a0 commit 6a868e3
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Showing 2 changed files with 6 additions and 3 deletions.
4 changes: 2 additions & 2 deletions qemu-check.exp
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Original file line number Diff line number Diff line change
Expand Up @@ -98,9 +98,9 @@ spawn -open [open "|tail -f serial1.log"]
set teecore $spawn_id
if {[string first "aarch64" $::env(QEMU)] != -1} {
if {$::env(XEN_BOOT) == "y"} {
spawn $::env(QEMU) -nographic -serial mon:stdio -serial file:serial1.log -smp $::env(QEMU_SMP) -machine virt,secure=on,gic-version=$::env(QEMU_GIC),virtualization=true -cpu cortex-a57 -d unimp -semihosting-config enable=on,target=native -m $::env(QEMU_MEM) -bios bl1.bin -initrd rootfs.cpio.gz -kernel Image -no-acpi -append "console=ttyAMA0,38400 keep_bootcon root=/dev/vda2" -drive if=none,file=xen.ext4,format=raw,id=hd1 -device virtio-blk-device,drive=hd1 -fsdev local,id=fsdev0,path=../..,security_model=none -device virtio-9p-device,fsdev=fsdev0,mount_tag=host
spawn $::env(QEMU) -nographic -serial mon:stdio -serial file:serial1.log -smp $::env(QEMU_SMP) -machine virt,secure=on,gic-version=$::env(QEMU_GIC),virtualization=true -cpu $::env(QEMU_CPU) -d unimp -semihosting-config enable=on,target=native -m $::env(QEMU_MEM) -bios bl1.bin -initrd rootfs.cpio.gz -kernel Image -no-acpi -append "console=ttyAMA0,38400 keep_bootcon root=/dev/vda2" -drive if=none,file=xen.ext4,format=raw,id=hd1 -device virtio-blk-device,drive=hd1 -fsdev local,id=fsdev0,path=../..,security_model=none -device virtio-9p-device,fsdev=fsdev0,mount_tag=host
} else {
spawn $::env(QEMU) -nographic -serial mon:stdio -serial file:serial1.log -smp $::env(QEMU_SMP) -machine virt,secure=on,gic-version=$::env(QEMU_GIC) -cpu cortex-a57 -d unimp -semihosting-config enable=on,target=native -m $::env(QEMU_MEM) -bios bl1.bin -initrd rootfs.cpio.gz -kernel Image -no-acpi -append "console=ttyAMA0,38400 keep_bootcon root=/dev/vda2"
spawn $::env(QEMU) -nographic -serial mon:stdio -serial file:serial1.log -smp $::env(QEMU_SMP) -machine virt,secure=on,gic-version=$::env(QEMU_GIC) -cpu $::env(QEMU_CPU) -d unimp -semihosting-config enable=on,target=native -m $::env(QEMU_MEM) -bios bl1.bin -initrd rootfs.cpio.gz -kernel Image -no-acpi -append "console=ttyAMA0,38400 keep_bootcon root=/dev/vda2"
}
} else {
spawn $::env(QEMU) -nographic -monitor none -machine virt -machine secure=on -cpu cortex-a15 -smp $::env(QEMU_SMP) -d unimp -semihosting-config enable=on,target=native -m 1057 -serial stdio -serial file:serial1.log -bios $bios
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5 changes: 4 additions & 1 deletion qemu_v8.mk
View file
Original file line number Diff line number Diff line change
Expand Up @@ -387,12 +387,14 @@ run: all


ifeq ($(XEN_BOOT),y)
QEMU_CPU ?= cortex-a57
QEMU_MEM ?= 2048
QEMU_SMP ?= 4
QEMU_VIRT = true
QEMU_XEN ?= -drive if=none,file=$(XEN_EXT4),format=raw,id=hd1 \
-device virtio-blk-device,drive=hd1
else
QEMU_CPU ?= max,sve=off
QEMU_SMP ?= 2
QEMU_MEM ?= 1057
QEMU_VIRT = false
Expand All @@ -411,7 +413,7 @@ run-only:
-serial tcp:localhost:54320 -serial tcp:localhost:54321 \
-smp $(QEMU_SMP) \
-s -S -machine virt,secure=on,gic-version=$(QEMU_GIC_VERSION),virtualization=$(QEMU_VIRT) \
-cpu max,sve=off \
-cpu $(QEMU_CPU) \
-d unimp -semihosting-config enable=on,target=native \
-m $(QEMU_MEM) \
-bios bl1.bin \
Expand Down Expand Up @@ -439,6 +441,7 @@ check: $(CHECK_DEPS)
export QEMU_SMP=$(QEMU_SMP) && \
export QEMU_GIC=$(QEMU_GIC_VERSION) && \
export QEMU_MEM=$(QEMU_MEM) && \
export QEMU_CPU=$(QEMU_CPU) && \
export XEN_BOOT=$(XEN_BOOT) && \
expect $(ROOT)/build/qemu-check.exp -- $(check-args) || \
(if [ "$(DUMP_LOGS_ON_ERROR)" ]; then \
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