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| author | Oliver Upton <oliver.upton@linux.dev> | 2022-11-07 22:00:33 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-11-10 14:43:47 +0000 |
| commit | 1577cb5823cefdff4416f272a88143ee933d97f5 (patch) | |
| tree | 632abd3cbc68471a272dba04a3d6c391f916b3d8 /arch/arm64/kvm/hyp/nvhe/mem_protect.c | |
| parent | af87fc03cfdf6893011df419588d27acdfb9c197 (diff) | |
| download | linux-stable-1577cb5823cefdff4416f272a88143ee933d97f5.tar.gz linux-stable-1577cb5823cefdff4416f272a88143ee933d97f5.tar.bz2 linux-stable-1577cb5823cefdff4416f272a88143ee933d97f5.zip | |
KVM: arm64: Handle stage-2 faults in parallel
The stage-2 map walker has been made parallel-aware, and as such can be
called while only holding the read side of the MMU lock. Rip out the
conditional locking in user_mem_abort() and instead grab the read lock.
Continue to take the write lock from other callsites to
kvm_pgtable_stage2_map().
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221107220033.1895655-1-oliver.upton@linux.dev
Diffstat (limited to 'arch/arm64/kvm/hyp/nvhe/mem_protect.c')
| -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 735769886b55..f6d82bf33ce1 100644 --- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c +++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c @@ -257,7 +257,7 @@ static inline int __host_stage2_idmap(u64 start, u64 end, enum kvm_pgtable_prot prot) { return kvm_pgtable_stage2_map(&host_kvm.pgt, start, end - start, start, - prot, &host_s2_pool); + prot, &host_s2_pool, 0); } /* |