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ANDROID: KVM: arm64: Don't recycle pages from host mem abort

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We're now guaranteed by construction to not require structural changes
to the host stage-2 page-table from the host memory abort path, so let's
use the low-level __host_stage2_idmap() function directly instead of the
higher-level wrapper that attempts page recycling when running out of
memory.

Bug: 264070847
Change-Id: I2db34777386931bfb3f93ea3b3e51e1e2a10ea79
Signed-off-by: Quentin Perret <qperret@google.com>
This commit is contained in:
Quentin Perret
2023-04-03 15:01:18 +00:00
committed by Greg Kroah-Hartman
parent aa4b272b34
commit 9debaf482d
1 changed files with 5 additions and 1 deletions
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6
arch/arm64/kvm/hyp/nvhe/mem_protect.c
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@@ -799,7 +799,11 @@ static int host_stage2_idmap(struct kvm_vcpu_fault_info *fault, u64 addr)
if (ret)
return ret;
return host_stage2_idmap_locked(range.start, range.end - range.start, prot, false);
/*
* We're guaranteed not to require memory allocation by construction,
* no need to bother even trying to recycle pages.
*/
return __host_stage2_idmap(range.start, range.end, prot, false);
}
static void (*illegal_abt_notifier)(struct kvm_cpu_context *host_ctxt);