diff options
| author |  Tianyu Lan <tiala@microsoft.com>
| 2023-08-18 06:29:17 -0400 |
|---|---|---|
| committer |  Wei Liu <wei.liu@kernel.org>
| 2023-08-22 00:38:20 +0000 |
| commit | 44676bb9d566ce2bfbd132f9745eb7eb2d784476 (patch) | |
| tree | 0c258b796b3f341697304d45dbb1575e06848235 /arch/x86/include/asm | |
| parent | clocksource: hyper-v: Mark hyperv tsc page unencrypted in sev-snp enlightened... (diff) | |
| download | linux-44676bb9d566.tar.gz linux-44676bb9d566.tar.bz2 linux-44676bb9d566.zip | |
x86/hyperv: Add smp support for SEV-SNP guest
In the AMD SEV-SNP guest, AP needs to be started up via sev es
save area and Hyper-V requires to call HVCALL_START_VP hypercall
to pass the gpa of sev es save area with AP's vp index and VTL(Virtual
trust level) parameters. Override wakeup_secondary_cpu_64 callback
with hv_snp_boot_ap.
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Tianyu Lan <tiala@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Link: https://lore.kernel.org/r/20230818102919.1318039-8-ltykernel@gmail.com
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/mshyperv.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index 8660d6bca6f2..6bd9ae04d9c3 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x86/include/asm/mshyperv.h @@ -49,6 +49,12 @@ extern u64 hv_current_partition_id; extern union hv_ghcb * __percpu *hv_ghcb_pg; extern bool hv_isolation_type_en_snp(void); +/* + * DEFAULT INIT GPAT and SEGMENT LIMIT value in struct VMSA + * to start AP in enlightened SEV guest. + */ +#define HV_AP_INIT_GPAT_DEFAULT 0x0007040600070406ULL +#define HV_AP_SEGMENT_LIMIT 0xffffffff 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); @@ -256,12 +262,14 @@ void hv_ghcb_msr_read(u64 msr, u64 *value); bool hv_ghcb_negotiate_protocol(void); void __noreturn hv_ghcb_terminate(unsigned int set, unsigned int reason); void hv_vtom_init(void); +int hv_snp_boot_ap(int cpu, unsigned long start_ip); #else static inline void hv_ghcb_msr_write(u64 msr, u64 value) {} static inline void hv_ghcb_msr_read(u64 msr, u64 *value) {} static inline bool hv_ghcb_negotiate_protocol(void) { return false; } static inline void hv_ghcb_terminate(unsigned int set, unsigned int reason) {} static inline void hv_vtom_init(void) {} +static int hv_snp_boot_ap(int cpu, unsigned long start_ip) { return 0; } #endif extern bool hv_isolation_type_snp(void); |