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add more options for pci passthrough

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This commit is contained in:
Dietmar Maurer 2013-12-13 11:43:05 +01:00
parent a96900bcbe
commit 0cea6a0160
1 changed files with 25 additions and 7 deletions
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32
PVE/QemuServer.pm
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@ -558,7 +558,7 @@ PVE::JSONSchema::register_standard_option("pve-qm-usb", $usbdesc);
my $hostpcidesc = {
optional => 1,
type => 'string', format => 'pve-qm-hostpci',
typetext => "HOSTPCIDEVICE",
typetext => "[host=]HOSTPCIDEVICE [,driver=kvm|vfio] [,rombar=on|off]",
description => <<EODESCR,
Map host pci devices. HOSTPCIDEVICE syntax is:
@ -566,6 +566,10 @@ Map host pci devices. HOSTPCIDEVICE syntax is:
You can us the 'lspci' command to list existing pci devices.
The 'rombar' option determines whether or not the device's ROM will be visible in the guest's memory map (default is 'on').
The 'driver' option is currently ignored.
Note: This option allows direct access to host hardware. So it is no longer possible to migrate such machines - use with special care.
Experimental: user reported problems with this option.
@ -1209,14 +1213,27 @@ sub parse_hostpci {
return undef if !$value;
my $res = {};
if ($value =~ m/^[a-f0-9]{2}:[a-f0-9]{2}\.[a-f0-9]$/) {
$res->{pciid} = $value;
} else {
return undef;
my @list = split(/,/, $value);
my $found;
my $res = {};
foreach my $kv (@list) {
if ($kv =~ m/^(host=)?([a-f0-9]{2}:[a-f0-9]{2}\.[a-f0-9])$/) {
$found = 1;
$res->{pciid} = $2;
} elsif ($kv =~ m/^driver=(kvm|vfio)$/) {
$res->{driver} = $1;
} elsif ($kv =~ m/^rombar=(on|off)$/) {
$res->{rombar} = $1;
} else {
warn "unknown hostpci setting '$kv'\n";
}
}
return undef if !$found;
return $res;
}
@ -2333,7 +2350,8 @@ sub config_to_command {
my $d = parse_hostpci($conf->{"hostpci$i"});
next if !$d;
$pciaddr = print_pci_addr("hostpci$i", $bridges);
push @$devices, '-device', "pci-assign,host=$d->{pciid},id=hostpci$i$pciaddr";
my $rombar = $d->{rombar} && $d->{rombar} eq 'off' ? ",rombar=0" : "";
push @$devices, '-device', "pci-assign,host=$d->{pciid},id=hostpci$i$pciaddr$rombar";
}
# usb devices