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Re: [PATCH libpciaccess] hurd: Clients or nested arbiters don't touch io
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From: |
Samuel Thibault |
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Subject: |
Re: [PATCH libpciaccess] hurd: Clients or nested arbiters don't touch ioports |
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Date: |
Sat, 27 Aug 2022 10:33:43 +0200 |
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User-agent: |
NeoMutt/20170609 (1.8.3) |
Hello,
Damien Zammit, le sam. 27 août 2022 04:34:20 +0000, a ecrit:
> I don't understand how a client/nested arbiter could be currently using these
> methods
> successfully because the hurd access method would fail to enable io via
> x86_enable_io().
In the Xorg case, it seems the server already calls ioperm by itself,
so evern if open_legacy_io fails (which Xorg doesn't check), subsequent
calls to pci_io_read32() actually suceed. Of course this is just pure
luck :)
Samuel