Re: kern/52440: nouveau blank screen w/some cards after MSI change in 7.99.64

["John D. Baker" <jdbaker%consolidated.net@localhost>]

The following reply was made to PR kern/52440; it has been noted by GNATS.

From: "John D. Baker" <jdbaker%consolidated.net@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: Jared McNeill <jmcneill%invisible.ca@localhost>
Subject: Re: kern/52440: nouveau blank screen w/some cards after MSI change
 in 7.99.64
Date: Thu, 6 Feb 2020 17:12:33 -0600 (CST)

 On Thu, 6 Feb 2020, Jared McNeill wrote:
 
 > Does this patch help (not tested)?
 > http://www.netbsd.org/~jmcneill/nouveau_msi.patch
 
 With this patch applied, the machine still panics, but differently:
 
 [...]
 kern.module.path=/stand/amd64/9.99.45/modules
 nouveau0: info: NVIDIA G94 (094100a1)
 nouveau0: info: bios: version 62.94.11.00.00
 uvm_fault(0xffffffff8194b460, 0x0, 1) -> e
 fatal page fault in supervisor mode
 trap type 6 code 0 rip 0xffffffff80e128d7 cs 0x8 rflags 0x10282 cr2 0 ilevel 0 rsp 0xffff9800bf60cb10
 curlwp 0xffffc8eb2612c8c0 pid 0.79 lowest kstack 0xffff9800bf6092c0
 kernel: page fault trap, code=0
 Stopped in pid 0.79 (system) at netbsd:nvkm_pci_init+0x84:      movq    0(%rsi),%rsi
 db{1}>
 
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