vmm: Cherry pick illumos commit '13361 bhyve should mask RDT cpuid info'
Summary:
commit 1a5f1879be09d3de900b2510692dd12003784d84
Author: Patrick Mooney <pmooney@pfmooney.com>
Date: 2020-12-16T20:02:23.000Z
13361 bhyve should mask RDT cpuid info
Reviewed by: Andy Fiddaman <andy@omnios.org>
Reviewed by: Toomas Soome <tsoome@me.com>
Approved by: Robert Mustacchi <rm@fingolfin.org>
https://github.com/illumos/illumos-gate/commit/1a5f1879be09d3de900b2510692dd12003784d8We saw similar warning of GP (on Intel Xeon CPU E5-2630 v4 and VM with Ubuntu 20.04 5.4.0-113-generic) until this commit is applied:
[ 1.658880] kernel: unchecked MSR access error: WRMSR to 0xc8f (tried to write 0x0000000000000000) at rIP: 0xffffffffacc735b4 (native_write_msr+0x4/0x30) [ 1.662734] kernel: Call Trace: [ 1.663885] kernel: ? clear_closid_rmid.isra.0+0x36/0x40 [ 1.665501] kernel: resctrl_online_cpu+0xdc/0x3f0 [ 1.666952] kernel: ? __switch_to_asm+0x40/0x70 [ 1.668358] kernel: ? __switch_to+0x7f/0x480 [ 1.669693] kernel: ? cat_wrmsr+0x70/0x70 [ 1.670970] kernel: cpuhp_invoke_callback+0x9b/0x580 [ 1.672541] kernel: ? __schedule+0x2eb/0x740 [ 1.673893] kernel: cpuhp_thread_fun+0xb8/0x120 [ 1.675304] kernel: smpboot_thread_fn+0xd0/0x170 [ 1.676685] kernel: kthread+0x104/0x140 [ 1.677948] kernel: ? sort_range+0x30/0x30 [ 1.679299] kernel: ? kthread_park+0x90/0x90 [ 1.680570] kernel: ret_from_fork+0x35/0x40 [ 1.682000] kernel: *** VALIDATE rdt *** [ 1.683454] kernel: resctrl: L3 monitoring detected
Reviewed by: markj, jhb
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D35442