From: Wei Liu <wei.liu@kernel.org>
To: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Siddharth Chandrasekaran <sidcha@amazon.de>,
Siddharth Chandrasekaran <sidcha.dev@gmail.com>,
Liran Alon <liran@amazon.com>,
Ioannis Aslanidis <iaslan@amazon.de>,
linux-hyperv@vger.kernel.org, linux-arch@vger.kernel.org,
linux-kernel@vger.kernel.org,
"K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Wei Liu <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>,
Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH] asm-generic/hyperv: Fix struct hv_message_header ordering
Date: Thu, 29 Jul 2021 14:07:05 +0000 [thread overview]
Message-ID: <20210729140705.wj5tokeq6lkxm2yy@liuwe-devbox-debian-v2> (raw)
In-Reply-To: <87eebh9qhd.fsf@vitty.brq.redhat.com>
On Thu, Jul 29, 2021 at 03:52:46PM +0200, Vitaly Kuznetsov wrote:
> Siddharth Chandrasekaran <sidcha@amazon.de> writes:
>
> > According to Hyper-V TLFS Version 6.0b, struct hv_message_header members
> > should be defined in the order:
> >
> > message_type, reserved, message_flags, payload_size
> >
> > but we have it defined in the order:
> >
> > message_type, payload_size, message_flags, reserved
> >
> > that is, the payload_size and reserved members swapped.
>
> Indeed,
>
> typedef struct
> {
> HV_MESSAGE_TYPE MessageType;
> UINT16 Reserved;
> HV_MESSAGE_FLAGS MessageFlags;
> UINT8 PayloadSize;
> union
> {
> UINT64 OriginationId;
> HV_PARTITION_ID Sender;
> HV_PORT_ID Port;
> };
> } HV_MESSAGE_HEADER;
Well. I think TLFS is wrong. Let me ask around.
Wei.
next prev parent reply other threads:[~2021-07-29 14:11 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-29 13:37 [PATCH] asm-generic/hyperv: Fix struct hv_message_header ordering Siddharth Chandrasekaran
2021-07-29 13:52 ` Vitaly Kuznetsov
2021-07-29 14:07 ` Wei Liu [this message]
2021-07-29 14:26 ` Siddharth Chandrasekaran
2021-07-29 16:56 ` Wei Liu
2021-07-30 9:35 ` Siddharth Chandrasekaran
2021-07-31 6:51 ` [asm] b5b51922df: kvm-unit-tests.hyperv_stimer.fail kernel test robot
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