From: "Kameron Carr" <kameroncarr@linux.microsoft.com>
To: "'Michael Kelley'" <mhklinux@outlook.com>
Cc: <catalin.marinas@arm.com>, <will@kernel.org>,
<mark.rutland@arm.com>, <lpieralisi@kernel.org>,
<sudeep.holla@kernel.org>, <arnd@arndb.de>, <thuth@redhat.com>,
<linux-hyperv@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-arch@vger.kernel.org>,
<kys@microsoft.com>, <haiyangz@microsoft.com>,
<wei.liu@kernel.org>, <decui@microsoft.com>,
<longli@microsoft.com>
Subject: RE: [RFC PATCH 1/6] arm64: rsi: Add RSI host call structure and helper function
Date: Thu, 25 Jun 2026 10:44:04 -0700 [thread overview]
Message-ID: <001901dd04ca$3d2d3260$b7879720$@linux.microsoft.com> (raw)
In-Reply-To: <SN6PR02MB4157C9AA6BA2DD14E7697F2BD4E32@SN6PR02MB4157.namprd02.prod.outlook.com>
On Thursday, June 18, 2026 10:46 AM, Michael Kelley wrote:
> From: Kameron Carr <kameroncarr@linux.microsoft.com> Sent: Tuesday, June
> 9, 2026 11:10 AM
> > diff --git a/arch/arm64/include/asm/rsi_smc.h
> b/arch/arm64/include/asm/rsi_smc.h
> > index e19253f96c940..ffea93340ed7f 100644
> > --- a/arch/arm64/include/asm/rsi_smc.h
> > +++ b/arch/arm64/include/asm/rsi_smc.h
> > @@ -142,6 +142,12 @@ struct realm_config {
> > */
> > } __aligned(0x1000);
> >
> > +struct rsi_host_call {
> > + u16 immediate;
>
> I don't see the "immediate" used anywhere in this patch set.
> Is it always zero for the Hyper-V use cases? Just curious ...
Yes, the immediate value is always zero for Hyper-V host calls.
-- Kameron
next prev parent reply other threads:[~2026-06-25 17:44 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-09 18:10 [RFC PATCH 0/6] arm64: hyperv: Add Realm support for Hyper-V Kameron Carr
2026-06-09 18:10 ` [RFC PATCH 1/6] arm64: rsi: Add RSI host call structure and helper function Kameron Carr
2026-06-09 18:20 ` sashiko-bot
2026-06-18 17:45 ` Michael Kelley
2026-06-25 17:44 ` Kameron Carr [this message]
2026-06-09 18:10 ` [RFC PATCH 2/6] firmware: smccc: Detect hypervisor via RSI host call in CCA Realms Kameron Carr
2026-06-09 18:24 ` sashiko-bot
2026-06-18 17:45 ` Michael Kelley
2026-06-25 17:42 ` Kameron Carr
2026-06-09 18:10 ` [RFC PATCH 3/6] arm64: hyperv: Add per-CPU RSI host call infrastructure for " Kameron Carr
2026-06-09 18:51 ` sashiko-bot
2026-06-18 17:46 ` Michael Kelley
2026-06-09 18:10 ` [RFC PATCH 4/6] Drivers: hv: Mark shared memory as decrypted " Kameron Carr
2026-06-09 18:27 ` sashiko-bot
2026-06-09 18:10 ` [RFC PATCH 5/6] arm64: hyperv: Route hypercalls through RSI host call in " Kameron Carr
2026-06-09 18:50 ` sashiko-bot
2026-06-18 17:46 ` Michael Kelley
2026-06-09 18:10 ` [RFC PATCH 6/6] arm64: hyperv: Implement hv_is_isolation_supported() for " Kameron Carr
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