bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-18 06:44:00 -04:00
Code Issues Packages Projects Releases Wiki Activity

KVM: arm64: Introduce KVM_REG_ARM_VENDOR_HYP_BMAP_2

Browse Source 
The vendor_hyp_bmap bitmap holds the information about the Vendor Hyp
services available to the user space and can be get/set using
{G, S}ET_ONE_REG interfaces. This is done using the pseudo-firmware
bitmap register KVM_REG_ARM_VENDOR_HYP_BMAP.

At present, this bitmap is a 64 bit one and since the function numbers
for newly added DISCOVER_IPML_* hypercalls are 64-65, introduce
another pseudo-firmware bitmap register KVM_REG_ARM_VENDOR_HYP_BMAP_2.

Reviewed-by: Sebastian Ott <sebott@redhat.com>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Link: https://lore.kernel.org/r/20250221140229.12588-4-shameerali.kolothum.thodi@huawei.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
This commit is contained in:
Shameer Kolothum
2025-02-21 14:02:26 +00:00
committed by Oliver Upton
parent 57e5cc9b8a
commit c0000e58c7
4 changed files with 41 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
arch/arm64/include/uapi/asm/kvm.h
View File

@@ -371,6 +371,7 @@ enum {
#endif
};
/* Vendor hyper call function numbers 0-63 */
#define KVM_REG_ARM_VENDOR_HYP_BMAP KVM_REG_ARM_FW_FEAT_BMAP_REG(2)
enum {
@@ -381,6 +382,17 @@ enum {
#endif
};
/* Vendor hyper call function numbers 64-127 */
#define KVM_REG_ARM_VENDOR_HYP_BMAP_2 KVM_REG_ARM_FW_FEAT_BMAP_REG(3)
enum {
KVM_REG_ARM_VENDOR_HYP_BIT_DISCOVER_IMPL_VER = 0,
KVM_REG_ARM_VENDOR_HYP_BIT_DISCOVER_IMPL_CPUS = 1,
#ifdef __KERNEL__
KVM_REG_ARM_VENDOR_HYP_BMAP_2_BIT_COUNT,
#endif
};
/* Device Control API on vm fd */
#define KVM_ARM_VM_SMCCC_CTRL 0
#define KVM_ARM_VM_SMCCC_FILTER 0