diff options
| author | Quentin Perret <qperret@google.com> | 2021-08-11 18:36:25 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-08-11 19:40:53 +0100 |
| commit | 12593568d7319c34c72038ea799ab1bd0f0eb01c (patch) | |
| tree | fb97e6a0b05223181cdc19eca80bb2a49a268e2b /arch/arm64/kvm | |
| parent | 64a80fb766f9a91e26930bfc56d8e7c12425df12 (diff) | |
KVM: arm64: Return -EPERM from __pkvm_host_share_hyp()
Fix the error code returned by __pkvm_host_share_hyp() when the
host attempts to share with EL2 a page that has already been shared with
another entity.
Reported-by: Will Deacon <will@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210811173630.2536721-1-qperret@google.com
Diffstat (limited to 'arch/arm64/kvm')
| -rw-r--r-- | arch/arm64/kvm/hyp/nvhe/mem_protect.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kvm/hyp/nvhe/mem_protect.c b/arch/arm64/kvm/hyp/nvhe/mem_protect.c index 8165390d3ec9..6ec695311498 100644 --- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c +++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c @@ -404,7 +404,7 @@ int __pkvm_host_share_hyp(u64 pfn) cur = kvm_pgtable_hyp_pte_prot(pte); prot = pkvm_mkstate(PAGE_HYP, PKVM_PAGE_SHARED_BORROWED); if (!check_prot(cur, prot, ~prot)) - ret = EPERM; + ret = -EPERM; goto unlock; map_shared: |