From: Tianyu Lan <ltykernel@gmail.com>
To: kys@microsoft.com, haiyangz@microsoft.com,
sthemmin@microsoft.com, wei.liu@kernel.org, decui@microsoft.com,
tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com,
davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com,
martin.petersen@oracle.com, arnd@arndb.de, hch@infradead.org,
m.szyprowski@samsung.com, robin.murphy@arm.com,
Tianyu.Lan@microsoft.com, thomas.lendacky@amd.com,
michael.h.kelley@microsoft.com
Cc: iommu@lists.linux-foundation.org, linux-arch@vger.kernel.org,
linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-scsi@vger.kernel.org, netdev@vger.kernel.org,
vkuznets@redhat.com, brijesh.singh@amd.com,
konrad.wilk@oracle.com, hch@lst.de, joro@8bytes.org,
parri.andrea@gmail.com, dave.hansen@intel.com
Subject: [PATCH V6 2/5] x86/hyper-v: Add hyperv Isolation VM check in the cc_platform_has()
Date: Tue, 7 Dec 2021 02:19:38 -0500 [thread overview]
Message-ID: <20211207071942.472442-3-ltykernel@gmail.com> (raw)
In-Reply-To: <20211207071942.472442-1-ltykernel@gmail.com>
From: Tianyu Lan <Tianyu.Lan@microsoft.com>
Hyper-V provides Isolation VM which has memory encrypt support. Add
hyperv_cc_platform_has() and return true for check of GUEST_MEM_ENCRYPT
attribute.
Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
---
Change since v3:
* Change code style of checking GUEST_MEM attribute in the
hyperv_cc_platform_has().
---
arch/x86/kernel/cc_platform.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/x86/kernel/cc_platform.c b/arch/x86/kernel/cc_platform.c
index 03bb2f343ddb..47db88c275d5 100644
--- a/arch/x86/kernel/cc_platform.c
+++ b/arch/x86/kernel/cc_platform.c
@@ -11,6 +11,7 @@
#include <linux/cc_platform.h>
#include <linux/mem_encrypt.h>
+#include <asm/mshyperv.h>
#include <asm/processor.h>
static bool __maybe_unused intel_cc_platform_has(enum cc_attr attr)
@@ -58,9 +59,16 @@ static bool amd_cc_platform_has(enum cc_attr attr)
#endif
}
+static bool hyperv_cc_platform_has(enum cc_attr attr)
+{
+ return attr == CC_ATTR_GUEST_MEM_ENCRYPT;
+}
bool cc_platform_has(enum cc_attr attr)
{
+ if (hv_is_isolation_supported())
+ return hyperv_cc_platform_has(attr);
+
if (sme_me_mask)
return amd_cc_platform_has(attr);
--
2.25.1
next prev parent reply other threads:[~2021-12-07 7:20 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-07 7:19 [PATCH V6 0/5] x86/Hyper-V: Add Hyper-V Isolation VM support(Second part) Tianyu Lan
2021-12-07 7:19 ` [PATCH V6 1/5] swiotlb: Add swiotlb bounce buffer remap function for HV IVM Tianyu Lan
2021-12-07 7:19 ` Tianyu Lan [this message]
2021-12-07 7:19 ` [PATCH V6 3/5] hyper-v: Enable swiotlb bounce buffer for Isolation VM Tianyu Lan
2021-12-07 7:19 ` [PATCH V6 4/5] scsi: storvsc: Add Isolation VM support for storvsc driver Tianyu Lan
2021-12-07 7:19 ` [PATCH V6 5/5] net: netvsc: Add Isolation VM support for netvsc driver Tianyu Lan
2021-12-07 7:55 [PATCH V6 0/5] x86/Hyper-V: Add Hyper-V Isolation VM support(Second part) Tianyu Lan
2021-12-07 7:55 ` [PATCH V6 2/5] x86/hyper-v: Add hyperv Isolation VM check in the cc_platform_has() Tianyu Lan
2021-12-07 9:47 ` Borislav Petkov
2021-12-07 11:18 ` Tianyu Lan
2021-12-09 20:38 ` Michael Kelley (LINUX)
2021-12-10 11:26 ` Tianyu Lan
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