diff options
| author | Huacai Chen <chenhuacai@loongson.cn> | 2025-06-24 14:29:27 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-20 18:40:47 +0200 |
| commit | d64c7142dc1114f9e6f6a5ba36466d6f3622d5fa (patch) | |
| tree | 99bd6b29c09ae9af9833f290cf2609e4c16c0511 | |
| parent | 50e0fd0050e510e749e1fdd1d7158e419ff8f3b9 (diff) | |
PCI: Extend isolated function probing to LoongArch
commit a02fd05661d73a8507dd70dd820e9b984490c545 upstream.
Like s390 and the jailhouse hypervisor, LoongArch's PCI architecture allows
passing isolated PCI functions to a guest OS instance. So it is possible
that there is a multi-function device without function 0 for the host or
guest.
Allow probing such functions by adding a IS_ENABLED(CONFIG_LOONGARCH) case
in the hypervisor_isolated_pci_functions() helper.
This is similar to commit 189c6c33ff42 ("PCI: Extend isolated function
probing to s390").
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20250624062927.4037734-1-chenhuacai@loongson.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | include/linux/hypervisor.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/hypervisor.h b/include/linux/hypervisor.h index 9efbc54e35e5..be5417303ecf 100644 --- a/include/linux/hypervisor.h +++ b/include/linux/hypervisor.h @@ -37,6 +37,9 @@ static inline bool hypervisor_isolated_pci_functions(void) if (IS_ENABLED(CONFIG_S390)) return true; + if (IS_ENABLED(CONFIG_LOONGARCH)) + return true; + return jailhouse_paravirt(); } |