From 810a521265023a1d5c6c081ea2d216bc63d422f5 Mon Sep 17 00:00:00 2001 From: Tianyu Lan Date: Mon, 25 Oct 2021 08:21:08 -0400 Subject: x86/hyperv: Add new hvcall guest address host visibility support Add new hvcall guest address host visibility support to mark memory visible to host. Call it inside set_memory_decrypted /encrypted(). Add HYPERVISOR feature check in the hv_is_isolation_supported() to optimize in non-virtualization environment. Acked-by: Dave Hansen Reviewed-by: Michael Kelley Signed-off-by: Tianyu Lan Link: https://lore.kernel.org/r/20211025122116.264793-4-ltykernel@gmail.com [ wei: fix conflicts with tip ] Signed-off-by: Wei Liu --- arch/x86/include/asm/mshyperv.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'arch/x86/include/asm/mshyperv.h') diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index 37739a277ac6..f3154ca41ac4 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x86/include/asm/mshyperv.h @@ -192,7 +192,7 @@ struct irq_domain *hv_create_pci_msi_domain(void); int hv_map_ioapic_interrupt(int ioapic_id, bool level, int vcpu, int vector, struct hv_interrupt_entry *entry); int hv_unmap_ioapic_interrupt(int ioapic_id, struct hv_interrupt_entry *entry); - +int hv_set_mem_host_visibility(unsigned long addr, int numpages, bool visible); #else /* CONFIG_HYPERV */ static inline void hyperv_init(void) {} static inline void hyperv_setup_mmu_ops(void) {} @@ -209,6 +209,11 @@ static inline int hyperv_flush_guest_mapping_range(u64 as, { return -1; } +static inline int hv_set_mem_host_visibility(unsigned long addr, int numpages, + bool visible) +{ + return -1; +} #endif /* CONFIG_HYPERV */ -- cgit v1.2.3