Support PCI resource-mapping passthrough (hostpci mapping=)#15
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Proxmox only lets the real root@pam user set a raw hostpciN ("only root can set
'hostpciN' config for non-mapped devices") — API tokens are refused. A *mapped*
device is settable by any token with Mapping.Use, and is node-portable.
QemuHostPci now takes either Mapping (preferred, token-settable) or Host (raw,
root-only); the encoder emits `mapping=<name>` or the raw address accordingly.
Verified live: created an AMD_Radeon_RX6600 mapping and attached it to a VM via
token — `hostpci0=mapping=AMD_Radeon_RX6600,pcie=1,x-vga=1` — where the raw form
returned HTTP 500. Part of Homelab #115 (Phase C).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Why
Proxmox refuses raw PCI passthrough from API tokens:
The token-compatible (and node-portable) way is a PCI resource mapping: an admin maps the device once, then any token with
Mapping.Usecan attach it ashostpciN: mapping=<name>.What
QemuHostPcinow accepts eitherMapping(preferred, token-settable) orHost(raw, root-only); the encoder emitsmapping=<name>or the raw address.Verified live (Homelab #115, Phase C)
Created an
AMD_Radeon_RX6600mapping (0000:09:00) and attached it to VM 1003 via the token:hostpci0=mapping=AMD_Radeon_RX6600,pcie=1,x-vga=1— succeeded where the raw0000:09:00form returned HTTP 500. Re-plan is idempotent (Skip).🤖 Generated with Claude Code