From: Marc Zyngier <maz@kernel.org>
To: Zenghui Yu <yuzenghui@huawei.com>
Cc: <kvmarm@lists.linux.dev>, <linux-arm-kernel@lists.infradead.org>,
<oliver.upton@linux.dev>, <james.morse@arm.com>,
<suzuki.poulose@arm.com>, <ricarkol@google.com>,
<wanghaibin.wang@huawei.com>
Subject: Re: [PATCH 1/2] KVM: arm64: selftest: Add the missing .guest_prepare()
Date: Sat, 07 Oct 2023 17:05:05 +0100 [thread overview]
Message-ID: <877cnymn9q.wl-maz@kernel.org> (raw)
In-Reply-To: <20231007124043.626-1-yuzenghui@huawei.com>
On Sat, 07 Oct 2023 13:40:42 +0100,
Zenghui Yu <yuzenghui@huawei.com> wrote:
>
> Running page_fault_test on a Cortex A72 fails with
>
> Test: ro_memslot_no_syndrome_guest_cas
> Testing guest mode: PA-bits:40, VA-bits:48, 4K pages
> Testing memory backing src type: anonymous
> ==== Test Assertion Failure ====
> aarch64/page_fault_test.c:117: guest_check_lse()
> pid=1944087 tid=1944087 errno=4 - Interrupted system call
> 1 0x00000000004028b3: vcpu_run_loop at page_fault_test.c:682
> 2 0x0000000000402d93: run_test at page_fault_test.c:731
> 3 0x0000000000403957: for_each_guest_mode at guest_modes.c:100
> 4 0x00000000004019f3: for_each_test_and_guest_mode at page_fault_test.c:1108
> 5 (inlined by) main at page_fault_test.c:1134
> 6 0x0000ffff868e503b: ?? ??:0
> 7 0x0000ffff868e5113: ?? ??:0
> 8 0x0000000000401aaf: _start at ??:?
> guest_check_lse()
>
> because we don't have a guest_prepare stage to check the presence of
> FEAT_LSE and skip the related guest_cas testing, and we end-up failing in
> GUEST_ASSERT(guest_check_lse()).
>
> Add the missing .guest_prepare() where it's indeed required.
>
> Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Acked-by: Marc Zyngier <maz@kernel.org>
M.
--
Without deviation from the norm, progress is not possible.
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next prev parent reply other threads:[~2023-10-07 16:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-07 12:40 [PATCH 1/2] KVM: arm64: selftest: Add the missing .guest_prepare() Zenghui Yu
2023-10-07 12:40 ` [PATCH 2/2] KVM: arm64: selftest: Perform ISB before reading PAR_EL1 Zenghui Yu
2023-10-07 16:06 ` Marc Zyngier
2023-10-07 16:05 ` Marc Zyngier [this message]
2023-10-07 16:50 ` [PATCH 1/2] KVM: arm64: selftest: Add the missing .guest_prepare() Oliver Upton
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