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| author | Tianyu Lan <Tianyu.Lan@microsoft.com> | 2021-10-25 08:21:06 -0400 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2021-10-28 10:47:52 +0000 |
| commit | 0cc4f6d9f0b9f20f3f1e1149bdb6737c0b4e134a (patch) | |
| tree | 6b38683b18f98bd2a5950149d5d2d29793833cdb /arch/x86/include/asm/mshyperv.h | |
| parent | e82f2069b52fb350f4ea568957dcc5c9f3649999 (diff) | |
| download | linux-0cc4f6d9f0b9f20f3f1e1149bdb6737c0b4e134a.tar.bz2 | |
x86/hyperv: Initialize GHCB page in Isolation VM
Hyperv exposes GHCB page via SEV ES GHCB MSR for SNP guest
to communicate with hypervisor. Map GHCB page for all
cpus to read/write MSR register and submit hvcall request
via ghcb page.
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Link: https://lore.kernel.org/r/20211025122116.264793-2-ltykernel@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/mshyperv.h')
| -rw-r--r-- | arch/x86/include/asm/mshyperv.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index adccbc209169..37739a277ac6 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x86/include/asm/mshyperv.h @@ -11,6 +11,8 @@ #include <asm/paravirt.h> #include <asm/mshyperv.h> +DECLARE_STATIC_KEY_FALSE(isolation_type_snp); + typedef int (*hyperv_fill_flush_list_func)( struct hv_guest_mapping_flush_list *flush, void *data); @@ -39,6 +41,8 @@ extern void *hv_hypercall_pg; extern u64 hv_current_partition_id; +extern void __percpu **hv_ghcb_pg; + int hv_call_deposit_pages(int node, u64 partition_id, u32 num_pages); int hv_call_add_logical_proc(int node, u32 lp_index, u32 acpi_id); int hv_call_create_vp(int node, u64 partition_id, u32 vp_index, u32 flags); |