Fix M1 QEMU flags

[ashley-cui]

When calling QEMU, the CPU arch should be host, and highmem should be on, or else the VM start fails.

[NO NEW TESTS NEEDED]

Signed-off-by: Ashley Cui [email protected]

Fixes: #14303

Does this PR introduce a user-facing change?

Fixed a bug where podman machine fails to start with memory > 3072 on M1

[openshift-ci]

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[ashley-cui]

@baude PTAL, should now work with qemu 7.0.0 and with -m > 3072

[shanesmith]

⚠️ While it seems to work well on macOS 12.4, this causes a kernel panic and crashes macOS on version 12.3! I've not been able to investigate any further, however...

[TomSweeneyRedHat]

Changes LGTM, but @shanesmith 's comment looks très effrayant

[ashley-cui]

@shanesmith Interesting, i tried in 12.2 and 12.4 and they both work, looks like its just a 12.3 issue..

[shanesmith]

qemu are aware of this issue and are saying that it's a macOS bug in 12.3, they also seem to be happy with 12.4 resolving the issue, no mention of fixing things for 12.3.... this leaves Podman in a bit of a pickle though 😅

[shanesmith]

Here's how Lima has handled it, fwiw

[rhatdan]

LGTM
I think we should just merge and deal with the 12.3 issue in a later PR.
/lgtm

[shanesmith]

As mentioned in #14303, the issue seems to be specifically with macOS 12.3 and the Apple M1 Pro chip.

[arthurbarr]

FWIW, I also see macOS crashing when doing podman machine start on macOS 12.1.

[cpolizzi]

@shanesmith @baude @ashley-cui I can now confirm that this fix of -cpu host and -M virt,himem=on and with memory sizing greater than 3GB does NOT crash an M1 MacBook Pro Max on macOS 12.4. Just got it tested. BTW, on Intel we use the -machine option instead of its short hand that we use on M1 of -M. Any reason for that? My customer base will be upgrading to 12.4 over the coming couple of weeks.

[maxclax]

I also see macOS crashing when doing podman machine start on macOS 12.6
==> qemu: stable 7.1.0 (bottled), HEAD
==> podman: stable 4.2.1 (bottled), HEAD

[shanesmith]

Could not reproduce, I have the same uname and podman version as @idubrovin

It seems these issues were also dependent on the chip, so for what it's worth I have a MacBook Pro (14-inch, 2021) which has an Apple M1 Pro chip.

[idubrovin]

Could not reproduce, I have the same uname and podman version as @idubrovin

It seems these issues were also dependent on the chip, so for what it's worth I have a MacBook Pro (14-inch, 2021) which has an Apple M1 Pro chip.

Thanks, I reinstalled qemu by brew, deleted vm, reinited it and problem is gone!
🫶

[maxclax]

That not after podman machine start that when you work and docker stop $(docker ps -a -q) ; docker rm $(docker ps -a -q); that freeze my cursor and my mac start thinking a long time and next automatically reboot. but this does not always happen, intermittently i can't figure out the reason

MacBook Pro (13-inch, M1, 2020)