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List:       haiku-bugs
Subject:    [haiku-bugs] Re: [Haiku] #16463: HP Envy x360 2020 AMD Ryzen R4 4700 support
From:       "Haiku" <trac () haiku-os ! org>
Date:       2020-09-30 19:51:39
Message-ID: 056.711b0f78f9af327361c9c2534db1b1ab () haiku-os ! org
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#16463: HP Envy x360 2020 AMD Ryzen R4 4700 support
---------------------------------+----------------------------
  Reporter:  yangh               |      Owner:  axeld
      Type:  bug                 |     Status:  new
  Priority:  normal              |  Milestone:  Unscheduled
 Component:  Servers/app_server  |    Version:  R1/Development
Resolution:                      |   Keywords:
Blocked By:                      |   Blocking:
  Platform:  All                 |
---------------------------------+----------------------------
Comment (by MelanieFox):

 Weird.
 Could you check if there is some mtrr dump
 Debugger command? (Type help)

 Maybe there are too many drivers using mtrr's insteat of Page Table
 Attributes and your CPU doesn't have enough of them?

 I guess the panic occured when radeon_hd mapped the framebuffer and
 instructed the vm manager to set it to write combine via mtrr.

 (topic vesa: sorry looked into the wrong source files. boot/vesa instead
 of the kernel driver)
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Ticket URL: <https://dev.haiku-os.org/ticket/16463#comment:16>
Haiku <https://dev.haiku-os.org>
The Haiku operating system.
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