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| author | Michael Kelley <mikelley@microsoft.com> | 2021-07-14 21:34:45 +0300 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2021-07-15 15:59:45 +0300 |
| commit | afca4d95dd7d7936d46a0ff02169cc40f534a6a3 (patch) | |
| tree | d37090124c331cf23e25ae78bb9750dd5579f361 /include/asm-generic | |
| parent | c445535c3efbfb8cb42d098e624d46ab149664b7 (diff) | |
| download | linux-afca4d95dd7d7936d46a0ff02169cc40f534a6a3.tar.xz | |
Drivers: hv: Make portions of Hyper-V init code be arch neutral
The code to allocate and initialize the hv_vp_index array is
architecture neutral. Similarly, the code to allocate and
populate the hypercall input and output arg pages is architecture
neutral. Move both sets of code out from arch/x86 and into
utility functions in drivers/hv/hv_common.c that can be shared
by Hyper-V initialization on ARM64.
No functional changes. However, the allocation of the hypercall
input and output arg pages is done differently so that the
size is always the Hyper-V page size, even if not the same as
the guest page size (such as with ARM64's 64K page size).
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/1626287687-2045-2-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/mshyperv.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h index 2ccb40670552..60cdff3e2252 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -39,6 +39,9 @@ struct ms_hyperv_info { }; extern struct ms_hyperv_info ms_hyperv; +extern void __percpu **hyperv_pcpu_input_arg; +extern void __percpu **hyperv_pcpu_output_arg; + extern u64 hv_do_hypercall(u64 control, void *inputaddr, void *outputaddr); extern u64 hv_do_fast_hypercall8(u16 control, u64 input8); @@ -152,6 +155,8 @@ void hv_remove_crash_handler(void); extern int vmbus_interrupt; extern int vmbus_irq; +extern bool hv_root_partition; + #if IS_ENABLED(CONFIG_HYPERV) /* * Hypervisor's notion of virtual processor ID is different from @@ -165,6 +170,11 @@ extern u32 hv_max_vp_index; /* Sentinel value for an uninitialized entry in hv_vp_index array */ #define VP_INVAL U32_MAX +int __init hv_common_init(void); +void __init hv_common_free(void); +int hv_common_cpu_init(unsigned int cpu); +int hv_common_cpu_die(unsigned int cpu); + void *hv_alloc_hyperv_page(void); void *hv_alloc_hyperv_zeroed_page(void); void hv_free_hyperv_page(unsigned long addr); |