From: Wei Liu <wei.liu@kernel.org>
To: Easwar Hariharan <easwar.hariharan@linux.microsoft.com>
Cc: wei.liu@kernel.org,
"Linux on Hyper-V List" <linux-hyperv@vger.kernel.org>,
"Doru Blânzeanu" <dblanzeanu@linux.microsoft.com>,
"Magnus Kulke" <magnuskulke@linux.microsoft.com>,
stable@kernel.org, "K. Y. Srinivasan" <kys@microsoft.com>,
"Haiyang Zhang" <haiyangz@microsoft.com>,
"Dexuan Cui" <decui@microsoft.com>,
"Long Li" <longli@microsoft.com>,
"Nuno Das Neves" <nunodasneves@linux.microsoft.com>,
"Roman Kisel" <romank@linux.microsoft.com>,
"Michael Kelley" <mhklinux@outlook.com>,
"open list" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mshv: add a missing padding field
Date: Thu, 23 Apr 2026 18:14:40 +0000 [thread overview]
Message-ID: <20260423181440.GA1196957@liuwe-devbox-debian-v2.local> (raw)
In-Reply-To: <19a904f4-e26f-4951-85ac-aae537da89cb@linux.microsoft.com>
On Thu, Apr 23, 2026 at 10:32:58AM -0700, Easwar Hariharan wrote:
> On 4/23/2026 10:29 AM, Easwar Hariharan wrote:
> > On 4/23/2026 10:26 AM, wei.liu@kernel.org wrote:
> >> From: Wei Liu <wei.liu@kernel.org>
> >>
> >> That was missed when importing the header.
> >>
> >> Reported-by: Doru Blânzeanu <dblanzeanu@linux.microsoft.com>
> >> Reported-by: Magnus Kulke <magnuskulke@linux.microsoft.com>
> >> Fixes: e68bda71a2384 ("hyperv: Add new Hyper-V headers in include/hyperv")
> >> Cc: stable@kernel.org
> >> Signed-off-by: Wei Liu <wei.liu@kernel.org>
> >> ---
> >> include/hyperv/hvhdk.h | 1 +
> >> 1 file changed, 1 insertion(+)
> >>
> >> diff --git a/include/hyperv/hvhdk.h b/include/hyperv/hvhdk.h
> >> index 5e83d3714966..ff7ca9ee1bd4 100644
> >> --- a/include/hyperv/hvhdk.h
> >> +++ b/include/hyperv/hvhdk.h
> >> @@ -79,6 +79,7 @@ struct hv_vp_register_page {
> >>
> >> u64 registers[18];
> >> };
> >> + __u8 reserved[8];
> >> /* Volatile XMM registers (HV_X64_REGISTER_CLASS_XMM) */
> >> union {
> >> struct {
> >
> >
> > This is not a uapi, so why not just use u8 instead of __u8?
> > Or since it's 8 u8s, a u64?
> >
> > Thanks,
> > Easwar (he/him)
>
> Hm, occurs to me that this would be used by VMMs, but then the registers
> field just above used a u64 instead of a __u64....
I fat-fingered u8 to __u8. User space code has scripts to massage the
types as needed.
To remain consistent with the existing code, it should be u8.
I can change the type when I commit this.
Wei
>
>
next prev parent reply other threads:[~2026-04-23 18:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-23 17:26 [PATCH] mshv: add a missing padding field wei.liu
2026-04-23 17:29 ` Easwar Hariharan
2026-04-23 17:32 ` Easwar Hariharan
2026-04-23 18:14 ` Wei Liu [this message]
2026-04-23 18:16 ` Easwar Hariharan
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