From: Kameron Carr <kameroncarr@linux.microsoft.com>
To: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org,
decui@microsoft.com, longli@microsoft.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,
mhklinux@outlook.com
Subject: [RFC PATCH 6/6] arm64: hyperv: Implement hv_is_isolation_supported() for CCA Realms
Date: Tue, 9 Jun 2026 11:10:30 -0700 [thread overview]
Message-ID: <20260609181030.2378391-7-kameroncarr@linux.microsoft.com> (raw)
In-Reply-To: <20260609181030.2378391-1-kameroncarr@linux.microsoft.com>
Provide an arm64 implementation of hv_is_isolation_supported() that
overrides the __weak default in drivers/hv/hv_common.c.
The implementation deliberately does not depend on
hv_is_hyperv_initialized() because hv_common_init() consults
hv_is_isolation_supported() before hyperv_initialized is set.
Signed-off-by: Kameron Carr <kameroncarr@linux.microsoft.com>
---
arch/arm64/hyperv/mshyperv.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm64/hyperv/mshyperv.c b/arch/arm64/hyperv/mshyperv.c
index b595b2b9bdbbb..b9b1c2f8e3ec7 100644
--- a/arch/arm64/hyperv/mshyperv.c
+++ b/arch/arm64/hyperv/mshyperv.c
@@ -213,3 +213,8 @@ bool hv_isolation_type_cca(void)
{
return is_realm_world();
}
+
+bool hv_is_isolation_supported(void)
+{
+ return is_realm_world();
+}
--
2.45.4
prev parent reply other threads:[~2026-06-09 18:11 UTC|newest]
Thread overview: 7+ 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 18:10 ` [RFC PATCH 2/6] firmware: smccc: Detect hypervisor via RSI host call in CCA Realms 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 18:10 ` [RFC PATCH 4/6] Drivers: hv: Mark shared memory as decrypted " Kameron Carr
2026-06-09 18:10 ` [RFC PATCH 5/6] arm64: hyperv: Route hypercalls through RSI host call in " Kameron Carr
2026-06-09 18:10 ` Kameron Carr [this message]
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