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,
x86@kernel•org, hpa@zytor•com, dave.hansen@linux•intel.com,
luto@kernel•org, peterz@infradead•org, konrad.wilk@oracle•com,
boris.ostrovsky@oracle•com, jgross@suse•com,
sstabellini@kernel•org, joro@8bytes•org, will@kernel•org,
davem@davemloft•net, kuba@kernel•org, jejb@linux•ibm.com,
martin.petersen@oracle•com, arnd@arndb•de, hch@lst•de,
m.szyprowski@samsung•com, robin.murphy@arm•com,
thomas.lendacky@amd•com, brijesh.singh@amd•com, ardb@kernel•org,
Tianyu.Lan@microsoft•com, rientjes@google•com,
martin.b.radev@gmail•com, akpm@linux-foundation•org,
rppt@kernel•org, kirill.shutemov@linux•intel.com,
aneesh.kumar@linux•ibm.com, krish.sadhukhan@oracle•com,
saravanand@fb•com, xen-devel@lists•xenproject.org,
pgonda@google•com, david@redhat•com, keescook@chromium•org,
hannes@cmpxchg•org, sfr@canb•auug.org.au,
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, anparri@microsoft•com
Subject: [PATCH 02/13] x86/HV: Initialize shared memory boundary in the Isolation VM.
Date: Wed, 28 Jul 2021 10:52:17 -0400 [thread overview]
Message-ID: <20210728145232.285861-3-ltykernel@gmail.com> (raw)
In-Reply-To: <20210728145232.285861-1-ltykernel@gmail.com>
From: Tianyu Lan <Tianyu.Lan@microsoft•com>
Hyper-V exposes shared memory boundary via cpuid
HYPERV_CPUID_ISOLATION_CONFIG and store it in the
shared_gpa_boundary of ms_hyperv struct. This prepares
to share memory with host for SNP guest.
Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft•com>
---
arch/x86/kernel/cpu/mshyperv.c | 2 ++
include/asm-generic/mshyperv.h | 12 +++++++++++-
2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index dcfbd2770d7f..773e84e134b3 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -327,6 +327,8 @@ static void __init ms_hyperv_init_platform(void)
if (ms_hyperv.priv_high & HV_ISOLATION) {
ms_hyperv.isolation_config_a = cpuid_eax(HYPERV_CPUID_ISOLATION_CONFIG);
ms_hyperv.isolation_config_b = cpuid_ebx(HYPERV_CPUID_ISOLATION_CONFIG);
+ ms_hyperv.shared_gpa_boundary =
+ (u64)1 << ms_hyperv.shared_gpa_boundary_bits;
pr_info("Hyper-V: Isolation Config: Group A 0x%x, Group B 0x%x\n",
ms_hyperv.isolation_config_a, ms_hyperv.isolation_config_b);
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h
index 4269f3174e58..aa26d24a5ca9 100644
--- a/include/asm-generic/mshyperv.h
+++ b/include/asm-generic/mshyperv.h
@@ -35,8 +35,18 @@ struct ms_hyperv_info {
u32 max_vp_index;
u32 max_lp_index;
u32 isolation_config_a;
- u32 isolation_config_b;
+ union {
+ u32 isolation_config_b;
+ struct {
+ u32 cvm_type : 4;
+ u32 Reserved11 : 1;
+ u32 shared_gpa_boundary_active : 1;
+ u32 shared_gpa_boundary_bits : 6;
+ u32 Reserved12 : 20;
+ };
+ };
void __percpu **ghcb_base;
+ u64 shared_gpa_boundary;
};
extern struct ms_hyperv_info ms_hyperv;
--
2.25.1
next prev parent reply other threads:[~2021-07-28 14:53 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-28 14:52 [PATCH 00/13] x86/Hyper-V: Add Hyper-V Isolation VM support Tianyu Lan
2021-07-28 14:52 ` [PATCH 01/13] x86/HV: Initialize GHCB page in Isolation VM Tianyu Lan
2021-08-02 11:53 ` Joerg Roedel
2021-08-02 12:35 ` Tianyu Lan
2021-07-28 14:52 ` Tianyu Lan [this message]
2021-07-28 14:52 ` [PATCH 03/13] x86/HV: Add new hvcall guest address host visibility support Tianyu Lan
2021-07-28 15:29 ` Dave Hansen
2021-07-29 12:49 ` Tianyu Lan
2021-08-02 12:01 ` Joerg Roedel
2021-08-02 12:59 ` Tianyu Lan
2021-08-02 13:11 ` Juergen Gross
2021-08-02 13:30 ` Joerg Roedel
2021-07-28 17:06 ` Dave Hansen
2021-07-29 13:01 ` Tianyu Lan
2021-07-29 14:09 ` Dave Hansen
2021-07-29 15:02 ` Tianyu Lan
2021-07-29 16:05 ` Dave Hansen
2021-07-30 2:52 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 04/13] HV: Mark vmbus ring buffer visible to host in Isolation VM Tianyu Lan
2021-08-02 12:07 ` Joerg Roedel
2021-08-02 12:56 ` Tianyu Lan
2021-08-02 12:59 ` Joerg Roedel
2021-08-02 13:08 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 05/13] HV: Add Write/Read MSR registers via ghcb page Tianyu Lan
2021-08-02 12:28 ` Joerg Roedel
2021-08-02 13:18 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 06/13] HV: Add ghcb hvcall support for SNP VM Tianyu Lan
2021-08-02 12:39 ` Joerg Roedel
2021-08-02 13:32 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 07/13] HV/Vmbus: Add SNP support for VMbus channel initiate message Tianyu Lan
2021-08-02 12:58 ` Joerg Roedel
2021-07-28 14:52 ` [PATCH 08/13] HV/Vmbus: Initialize VMbus ring buffer for Isolation VM Tianyu Lan
2021-07-28 14:52 ` [PATCH 09/13] DMA: Add dma_map_decrypted/dma_unmap_encrypted() function Tianyu Lan
2021-07-29 15:13 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 10/13] x86/Swiotlb: Add Swiotlb bounce buffer remap function for HV IVM Tianyu Lan
2021-07-29 16:29 ` Konrad Rzeszutek Wilk
2021-07-30 4:10 ` Tianyu Lan
2021-07-28 14:52 ` [PATCH 11/13] HV/IOMMU: Enable swiotlb bounce buffer for Isolation VM Tianyu Lan
2021-07-28 14:52 ` [PATCH 12/13] HV/Netvsc: Add Isolation VM support for netvsc driver Tianyu Lan
2021-07-28 14:52 ` [PATCH 13/13] HV/Storvsc: Add Isolation VM support for storvsc driver Tianyu Lan
2021-08-02 13:20 ` Joerg Roedel
2021-08-02 14:08 ` Tianyu Lan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210728145232.285861-3-ltykernel@gmail.com \
--to=ltykernel@gmail$(echo .)com \
--cc=Tianyu.Lan@microsoft$(echo .)com \
--cc=akpm@linux-foundation$(echo .)org \
--cc=aneesh.kumar@linux$(echo .)ibm.com \
--cc=anparri@microsoft$(echo .)com \
--cc=ardb@kernel$(echo .)org \
--cc=arnd@arndb$(echo .)de \
--cc=boris.ostrovsky@oracle$(echo .)com \
--cc=bp@alien8$(echo .)de \
--cc=brijesh.singh@amd$(echo .)com \
--cc=dave.hansen@linux$(echo .)intel.com \
--cc=davem@davemloft$(echo .)net \
--cc=david@redhat$(echo .)com \
--cc=decui@microsoft$(echo .)com \
--cc=haiyangz@microsoft$(echo .)com \
--cc=hannes@cmpxchg$(echo .)org \
--cc=hch@lst$(echo .)de \
--cc=hpa@zytor$(echo .)com \
--cc=iommu@lists$(echo .)linux-foundation.org \
--cc=jejb@linux$(echo .)ibm.com \
--cc=jgross@suse$(echo .)com \
--cc=joro@8bytes$(echo .)org \
--cc=keescook@chromium$(echo .)org \
--cc=kirill.shutemov@linux$(echo .)intel.com \
--cc=konrad.wilk@oracle$(echo .)com \
--cc=krish.sadhukhan@oracle$(echo .)com \
--cc=kuba@kernel$(echo .)org \
--cc=kys@microsoft$(echo .)com \
--cc=linux-arch@vger$(echo .)kernel.org \
--cc=linux-hyperv@vger$(echo .)kernel.org \
--cc=linux-kernel@vger$(echo .)kernel.org \
--cc=linux-scsi@vger$(echo .)kernel.org \
--cc=luto@kernel$(echo .)org \
--cc=m.szyprowski@samsung$(echo .)com \
--cc=martin.b.radev@gmail$(echo .)com \
--cc=martin.petersen@oracle$(echo .)com \
--cc=michael.h.kelley@microsoft$(echo .)com \
--cc=mingo@redhat$(echo .)com \
--cc=netdev@vger$(echo .)kernel.org \
--cc=peterz@infradead$(echo .)org \
--cc=pgonda@google$(echo .)com \
--cc=rientjes@google$(echo .)com \
--cc=robin.murphy@arm$(echo .)com \
--cc=rppt@kernel$(echo .)org \
--cc=saravanand@fb$(echo .)com \
--cc=sfr@canb$(echo .)auug.org.au \
--cc=sstabellini@kernel$(echo .)org \
--cc=sthemmin@microsoft$(echo .)com \
--cc=tglx@linutronix$(echo .)de \
--cc=thomas.lendacky@amd$(echo .)com \
--cc=vkuznets@redhat$(echo .)com \
--cc=wei.liu@kernel$(echo .)org \
--cc=will@kernel$(echo .)org \
--cc=x86@kernel$(echo .)org \
--cc=xen-devel@lists$(echo .)xenproject.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox