| Message ID | 20250503191515.24041-12-ricardo.neri-calderon@linux.intel.com |
|---|---|
| State | New |
| Headers | show |
| Series | x86/hyperv/hv_vtl: Use a wakeup mailbox to boot secondary CPUs | expand |
diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h index 97bfbd0d24d4..18003453569a 100644 --- a/arch/x86/include/asm/smp.h +++ b/arch/x86/include/asm/smp.h @@ -149,6 +149,7 @@ static inline struct cpumask *cpu_l2c_shared_mask(int cpu) #ifdef CONFIG_X86_64 void setup_mp_wakeup_mailbox(u64 addr); struct acpi_madt_multiproc_wakeup_mailbox *get_mp_wakeup_mailbox(void); +u64 get_mp_wakeup_mailbox_paddr(void); #endif #else /* !CONFIG_SMP */ diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 6f39ebe4d192..1e211c78c1d3 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1431,4 +1431,9 @@ struct acpi_madt_multiproc_wakeup_mailbox *get_mp_wakeup_mailbox(void) { return acpi_mp_wake_mailbox; } + +u64 get_mp_wakeup_mailbox_paddr(void) +{ + return acpi_mp_wake_mailbox_paddr; +} #endif
A Hyper-V VTL level 2 guest on a TDX environment needs to map the physical page of the ACPI Multiprocessor Wakeup Structure as private (encrypted). It needs to know the physical address of this structure. Add a helper function. Suggested-by: Michael Kelley <mhklinux@outlook.com> Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> --- Changes since v2: - Introduced this patch Changes since v1: - N/A --- arch/x86/include/asm/smp.h | 1 + arch/x86/kernel/smpboot.c | 5 +++++ 2 files changed, 6 insertions(+)