iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86/hyperv: Add new hvcall guest address host visibility support

Browse Source 
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 <dave.hansen@intel.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Link: https://lore.kernel.org/r/20211025122116.264793-4-ltykernel@gmail.com
[ wei: fix conflicts with tip ]
Signed-off-by: Wei Liu <wei.liu@kernel.org>
This commit is contained in:
Tianyu Lan
2021-10-25 08:21:08 -04:00
committed by Wei Liu
parent af788f355e
commit 810a521265
7 changed files with 154 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
arch/x86/include/asm/mshyperv.h
View File

@ -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 */