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| author | Zenghui Yu (Huawei) <zenghui.yu@linux.dev> | 2026-02-26 01:35:14 +0800 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2026-03-05 15:46:48 +0000 |
| commit | 99a339377f3c1bdf6edd5614d36893ab1806f9e6 (patch) | |
| tree | 783db0a94eb027340f267fd6eb7bb50ae57bcc59 | |
| parent | 4c2264ecdf39ddbdb62e37b156015aacf05d0dcb (diff) | |
| download | linux-next-99a339377f3c1bdf6edd5614d36893ab1806f9e6.tar.gz linux-next-99a339377f3c1bdf6edd5614d36893ab1806f9e6.zip | |
KVM: arm64: nv: Report addrsz fault at level 0 with a bad VTTBR.BADDR
As per R_BFHQH,
" When an Address size fault is generated, the reported fault code
indicates one of the following:
If the fault was generated due to the TTBR_ELx used in the translation
having nonzero address bits above the OA size, then a fault at level 0. "
Fix the reported Address size fault level as being 0 if the base address is
wrongly programmed by L1.
Fixes: 61e30b9eef7f ("KVM: arm64: nv: Implement nested Stage-2 page table walk logic")
Signed-off-by: Zenghui Yu (Huawei) <zenghui.yu@linux.dev>
Link: https://patch.msgid.link/20260225173515.20490-3-zenghui.yu@linux.dev
Signed-off-by: Marc Zyngier <maz@kernel.org>
| -rw-r--r-- | arch/arm64/kvm/nested.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/kvm/nested.c b/arch/arm64/kvm/nested.c index 9da28814b646..91e4f3cb580a 100644 --- a/arch/arm64/kvm/nested.c +++ b/arch/arm64/kvm/nested.c @@ -280,7 +280,8 @@ static int walk_nested_s2_pgd(struct kvm_vcpu *vcpu, phys_addr_t ipa, base_addr = wi->baddr & GENMASK_ULL(47, base_lower_bound); if (check_output_size(wi, base_addr)) { - out->esr = compute_fsc(level, ESR_ELx_FSC_ADDRSZ); + /* R_BFHQH */ + out->esr = compute_fsc(0, ESR_ELx_FSC_ADDRSZ); return 1; } |