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| author | Jiqian Chen <Jiqian.Chen@amd.com> | 2024-10-12 10:45:37 +0200 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2024-10-18 11:59:04 +0200 |
| commit | 0fd2a743301b6b5eec0f407080f89bed98384836 (patch) | |
| tree | 327b2cadd794a4a1f9d56583084c69c9abc0962c /include/xen/acpi.h | |
| parent | x86/xen: mark boot CPU of PV guest in MSR_IA32_APICBASE (diff) | |
| download | linux-0fd2a743301b6b5eec0f407080f89bed98384836.tar.xz linux-0fd2a743301b6b5eec0f407080f89bed98384836.zip | |
xen: Remove dependency between pciback and privcmd
Commit 2fae6bb7be32 ("xen/privcmd: Add new syscall to get gsi from dev")
adds a weak reverse dependency to the config XEN_PRIVCMD definition, that
dependency causes xen-privcmd can't be loaded on domU, because dependent
xen-pciback isn't always be loaded successfully on domU.
To solve above problem, remove that dependency, and do not call
pcistub_get_gsi_from_sbdf() directly, instead add a hook in
drivers/xen/apci.c, xen-pciback register the real call function, then in
privcmd_ioctl_pcidev_get_gsi call that hook.
Fixes: 2fae6bb7be32 ("xen/privcmd: Add new syscall to get gsi from dev")
Reported-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Signed-off-by: Jiqian Chen <Jiqian.Chen@amd.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Message-ID: <20241012084537.1543059-1-Jiqian.Chen@amd.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to '')
| -rw-r--r-- | include/xen/acpi.h | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/include/xen/acpi.h b/include/xen/acpi.h index daa96a22d257..c66a8461612e 100644 --- a/include/xen/acpi.h +++ b/include/xen/acpi.h @@ -35,6 +35,8 @@ #include <linux/types.h> +typedef int (*get_gsi_from_sbdf_t)(u32 sbdf); + #ifdef CONFIG_XEN_DOM0 #include <asm/xen/hypervisor.h> #include <xen/xen.h> @@ -72,6 +74,8 @@ int xen_acpi_get_gsi_info(struct pci_dev *dev, int *gsi_out, int *trigger_out, int *polarity_out); +void xen_acpi_register_get_gsi_func(get_gsi_from_sbdf_t func); +int xen_acpi_get_gsi_from_sbdf(u32 sbdf); #else static inline void xen_acpi_sleep_register(void) { @@ -89,12 +93,12 @@ static inline int xen_acpi_get_gsi_info(struct pci_dev *dev, { return -1; } -#endif -#ifdef CONFIG_XEN_PCI_STUB -int pcistub_get_gsi_from_sbdf(unsigned int sbdf); -#else -static inline int pcistub_get_gsi_from_sbdf(unsigned int sbdf) +static inline void xen_acpi_register_get_gsi_func(get_gsi_from_sbdf_t func) +{ +} + +static inline int xen_acpi_get_gsi_from_sbdf(u32 sbdf) { return -1; } |