diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-25 11:24:24 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-25 11:24:24 -0400 |
| commit | b8917b4ae44d1b945f6fba3d8ee6777edb44633b (patch) | |
| tree | 0e3b6b1113b40d444f078b3bedcd98b93ac78f4a /arch/arm64/kvm/hyp/entry.S | |
| parent | 79b1e56509beb8d53b2b92f27555cd2175c67b8a (diff) | |
| parent | 188982cda00ebfe28b50c2905d9bbaa2e9a001b9 (diff) | |
Merge tag 'kvmarm-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 updates for v5.14.
- Add MTE support in guests, complete with tag save/restore interface
- Reduce the impact of CMOs by moving them in the page-table code
- Allow device block mappings at stage-2
- Reduce the footprint of the vmemmap in protected mode
- Support the vGIC on dumb systems such as the Apple M1
- Add selftest infrastructure to support multiple configuration
and apply that to PMU/non-PMU setups
- Add selftests for the debug architecture
- The usual crop of PMU fixes
Diffstat (limited to 'arch/arm64/kvm/hyp/entry.S')
| -rw-r--r-- | arch/arm64/kvm/hyp/entry.S | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm64/kvm/hyp/entry.S b/arch/arm64/kvm/hyp/entry.S index e831d3dfd50d..435346ea1504 100644 --- a/arch/arm64/kvm/hyp/entry.S +++ b/arch/arm64/kvm/hyp/entry.S @@ -13,6 +13,7 @@ #include <asm/kvm_arm.h> #include <asm/kvm_asm.h> #include <asm/kvm_mmu.h> +#include <asm/kvm_mte.h> #include <asm/kvm_ptrauth.h> .text @@ -51,6 +52,9 @@ alternative_else_nop_endif add x29, x0, #VCPU_CONTEXT + // mte_switch_to_guest(g_ctxt, h_ctxt, tmp1) + mte_switch_to_guest x29, x1, x2 + // Macro ptrauth_switch_to_guest format: // ptrauth_switch_to_guest(guest cxt, tmp1, tmp2, tmp3) // The below macro to restore guest keys is not implemented in C code @@ -142,6 +146,9 @@ SYM_INNER_LABEL(__guest_exit, SYM_L_GLOBAL) // when this feature is enabled for kernel code. ptrauth_switch_to_hyp x1, x2, x3, x4, x5 + // mte_switch_to_hyp(g_ctxt, h_ctxt, reg1) + mte_switch_to_hyp x1, x2, x3 + // Restore hyp's sp_el0 restore_sp_el0 x2, x3 |