From: Tianyu Lan <ltykernel@gmail.com>
To: Borislav Petkov <bp@alien8.de>
Cc: kys@microsoft.com, haiyangz@microsoft.com,
sthemmin@microsoft.com, wei.liu@kernel.org, decui@microsoft.com,
tglx@linutronix.de, mingo@redhat.com, x86@kernel.org,
hpa@zytor.com, arnd@arndb.de, dave.hansen@linux.intel.com,
luto@kernel.org, peterz@infradead.org, akpm@linux-foundation.org,
kirill.shutemov@linux.intel.com, rppt@kernel.org,
hannes@cmpxchg.org, cai@lca.pw, krish.sadhukhan@oracle.com,
saravanand@fb.com, Tianyu.Lan@microsoft.com,
konrad.wilk@oracle.com, hch@lst.de, m.szyprowski@samsung.com,
robin.murphy@arm.com, boris.ostrovsky@oracle.com,
jgross@suse.com, sstabellini@kernel.org, joro@8bytes.org,
will@kernel.org, xen-devel@lists.xenproject.org,
davem@davemloft.net, kuba@kernel.org, jejb@linux.ibm.com,
martin.petersen@oracle.com, 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,
thomas.lendacky@amd.com, brijesh.singh@amd.com,
sunilmut@microsoft.com
Subject: Re: [RFC PATCH V3 03/11] x86/Hyper-V: Add new hvcall guest address host visibility support
Date: Mon, 31 May 2021 12:08:21 +0800 [thread overview]
Message-ID: <3716c9e0-2508-3553-5a70-e4b3f5f4c82e@gmail.com> (raw)
In-Reply-To: <YLPYqxF7urDIAd9z@zn.tnic>
Hi Borislav:
Thanks for your review.
On 5/31/2021 2:25 AM, Borislav Petkov wrote:
> On Sun, May 30, 2021 at 11:06:20AM -0400, Tianyu Lan wrote:
>> diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c
>> index 156cd235659f..a82975600107 100644
>> --- a/arch/x86/mm/pat/set_memory.c
>> +++ b/arch/x86/mm/pat/set_memory.c
>> @@ -29,6 +29,8 @@
>> #include <asm/proto.h>
>> #include <asm/memtype.h>
>> #include <asm/set_memory.h>
>> +#include <asm/hyperv-tlfs.h>
>> +#include <asm/mshyperv.h>
>>
>> #include "../mm_internal.h"
>>
>> @@ -1986,8 +1988,14 @@ static int __set_memory_enc_dec(unsigned long addr, int numpages, bool enc)
>> int ret;
>>
>> /* Nothing to do if memory encryption is not active */
>> - if (!mem_encrypt_active())
>> + if (hv_is_isolation_supported()) {
>> + return hv_set_mem_host_visibility((void *)addr,
>> + numpages * HV_HYP_PAGE_SIZE,
>> + enc ? VMBUS_PAGE_NOT_VISIBLE
>> + : VMBUS_PAGE_VISIBLE_READ_WRITE);
>
> Put all this gunk in a hv-specific function somewhere in hv-land which
> you only call from here. This way you probably won't even need to export
> hv_set_mem_host_visibility() and so on...
>
Good idea. Will update. Thanks.
WARNING: multiple messages have this Message-ID (diff)
From: Tianyu Lan <ltykernel@gmail.com>
To: Borislav Petkov <bp@alien8.de>
Cc: linux-hyperv@vger.kernel.org, brijesh.singh@amd.com,
thomas.lendacky@amd.com, peterz@infradead.org,
dave.hansen@linux.intel.com, hpa@zytor.com, kys@microsoft.com,
will@kernel.org, hch@lst.de, linux-arch@vger.kernel.org,
wei.liu@kernel.org, sstabellini@kernel.org,
sthemmin@microsoft.com, linux-scsi@vger.kernel.org,
x86@kernel.org, decui@microsoft.com, mingo@redhat.com,
xen-devel@lists.xenproject.org, jejb@linux.ibm.com,
jgross@suse.com, Tianyu.Lan@microsoft.com, arnd@arndb.de,
konrad.wilk@oracle.com, haiyangz@microsoft.com, kuba@kernel.org,
cai@lca.pw, luto@kernel.org, krish.sadhukhan@oracle.com,
tglx@linutronix.de, vkuznets@redhat.com,
boris.ostrovsky@oracle.com, martin.petersen@oracle.com,
saravanand@fb.com, netdev@vger.kernel.org,
sunilmut@microsoft.com, linux-kernel@vger.kernel.org,
iommu@lists.linux-foundation.org,
kirill.shutemov@linux.intel.com, hannes@cmpxchg.org,
akpm@linux-foundation.org, robin.murphy@arm.com,
davem@davemloft.net, rppt@kernel.org
Subject: Re: [RFC PATCH V3 03/11] x86/Hyper-V: Add new hvcall guest address host visibility support
Date: Mon, 31 May 2021 12:08:21 +0800 [thread overview]
Message-ID: <3716c9e0-2508-3553-5a70-e4b3f5f4c82e@gmail.com> (raw)
In-Reply-To: <YLPYqxF7urDIAd9z@zn.tnic>
Hi Borislav:
Thanks for your review.
On 5/31/2021 2:25 AM, Borislav Petkov wrote:
> On Sun, May 30, 2021 at 11:06:20AM -0400, Tianyu Lan wrote:
>> diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c
>> index 156cd235659f..a82975600107 100644
>> --- a/arch/x86/mm/pat/set_memory.c
>> +++ b/arch/x86/mm/pat/set_memory.c
>> @@ -29,6 +29,8 @@
>> #include <asm/proto.h>
>> #include <asm/memtype.h>
>> #include <asm/set_memory.h>
>> +#include <asm/hyperv-tlfs.h>
>> +#include <asm/mshyperv.h>
>>
>> #include "../mm_internal.h"
>>
>> @@ -1986,8 +1988,14 @@ static int __set_memory_enc_dec(unsigned long addr, int numpages, bool enc)
>> int ret;
>>
>> /* Nothing to do if memory encryption is not active */
>> - if (!mem_encrypt_active())
>> + if (hv_is_isolation_supported()) {
>> + return hv_set_mem_host_visibility((void *)addr,
>> + numpages * HV_HYP_PAGE_SIZE,
>> + enc ? VMBUS_PAGE_NOT_VISIBLE
>> + : VMBUS_PAGE_VISIBLE_READ_WRITE);
>
> Put all this gunk in a hv-specific function somewhere in hv-land which
> you only call from here. This way you probably won't even need to export
> hv_set_mem_host_visibility() and so on...
>
Good idea. Will update. Thanks.
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next prev parent reply other threads:[~2021-05-31 4:08 UTC|newest]
Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-30 15:06 [RFC PATCH V3 00/11] x86/Hyper-V: Add Hyper-V Isolation VM support Tianyu Lan
2021-05-30 15:06 ` Tianyu Lan
2021-05-30 15:06 ` [RFC PATCH V3 01/11] x86/HV: Initialize GHCB page in Isolation VM Tianyu Lan
2021-05-30 15:06 ` Tianyu Lan
2021-06-07 6:41 ` Christoph Hellwig
2021-06-07 6:41 ` Christoph Hellwig
2021-06-07 8:14 ` Tianyu Lan
2021-06-07 8:14 ` Tianyu Lan
2021-06-09 12:38 ` Joerg Roedel
2021-06-09 12:38 ` Joerg Roedel
2021-06-10 14:13 ` Tianyu Lan
2021-06-10 14:13 ` Tianyu Lan
2021-05-30 15:06 ` [RFC PATCH V3 02/11] x86/HV: Initialize shared memory boundary in the " Tianyu Lan
2021-05-30 15:06 ` Tianyu Lan
2021-05-30 15:06 ` [RFC PATCH V3 03/11] x86/Hyper-V: Add new hvcall guest address host visibility support Tianyu Lan
2021-05-30 15:06 ` Tianyu Lan
2021-05-30 18:25 ` Borislav Petkov
2021-05-30 18:25 ` Borislav Petkov
2021-05-31 4:08 ` Tianyu Lan [this message]
2021-05-31 4:08 ` Tianyu Lan
2021-06-10 9:47 ` Vitaly Kuznetsov
2021-06-10 9:47 ` Vitaly Kuznetsov
2021-06-10 14:18 ` Tianyu Lan
2021-06-10 14:18 ` Tianyu Lan
2021-05-30 15:06 ` [RFC PATCH V3 04/11] HV: Add Write/Read MSR registers via ghcb Tianyu Lan
2021-05-30 15:06 ` Tianyu Lan
2021-06-09 12:46 ` Joerg Roedel
2021-06-09 12:46 ` Joerg Roedel
2021-06-10 14:15 ` Tianyu Lan
2021-06-10 14:15 ` Tianyu Lan
2021-05-30 15:06 ` [RFC PATCH V3 05/11] HV: Add ghcb hvcall support for SNP VM Tianyu Lan
2021-05-30 15:06 ` Tianyu Lan
2021-06-09 12:49 ` Joerg Roedel
2021-06-09 12:49 ` Joerg Roedel
2021-05-30 15:06 ` [RFC PATCH V3 06/11] HV/Vmbus: Add SNP support for VMbus channel initiate message Tianyu Lan
2021-05-30 15:06 ` Tianyu Lan
2021-05-30 15:06 ` [RFC PATCH V3 07/11] HV/Vmbus: Initialize VMbus ring buffer for Isolation VM Tianyu Lan
2021-05-30 15:06 ` Tianyu Lan
2021-05-30 15:06 ` [RFC PATCH V3 08/11] swiotlb: Add bounce buffer remap address setting function Tianyu Lan
2021-05-30 15:06 ` Tianyu Lan
2021-06-07 6:43 ` Christoph Hellwig
2021-06-07 6:43 ` Christoph Hellwig
2021-06-07 14:56 ` Tianyu Lan
2021-06-07 14:56 ` Tianyu Lan
2021-06-10 14:25 ` Tianyu Lan
2021-06-10 14:25 ` Tianyu Lan
2021-06-14 7:12 ` Christoph Hellwig
2021-06-14 7:12 ` Christoph Hellwig
2021-06-14 13:29 ` Tom Lendacky
2021-06-14 13:29 ` Tom Lendacky via iommu
2021-06-14 13:37 ` Tianyu Lan
2021-06-14 13:37 ` Tianyu Lan
2021-06-14 13:42 ` Tianyu Lan
2021-06-14 13:42 ` Tianyu Lan
2021-06-14 13:49 ` Robin Murphy
2021-06-14 13:49 ` Robin Murphy
2021-06-14 15:32 ` Christoph Hellwig
2021-06-14 15:32 ` Christoph Hellwig
2021-06-15 15:24 ` Tianyu Lan
2021-06-15 15:24 ` Tianyu Lan
2021-07-12 9:40 ` Tianyu Lan
2021-07-12 9:40 ` Tianyu Lan
2021-05-30 15:06 ` [RFC PATCH V3 09/11] HV/IOMMU: Enable swiotlb bounce buffer for Isolation VM Tianyu Lan
2021-05-30 15:06 ` Tianyu Lan
2021-06-02 1:16 ` Boris Ostrovsky
2021-06-02 1:16 ` Boris Ostrovsky
2021-06-02 15:01 ` Tianyu Lan
2021-06-02 15:01 ` Tianyu Lan
2021-06-02 16:02 ` Boris Ostrovsky
2021-06-02 16:02 ` Boris Ostrovsky
2021-06-03 15:37 ` Tianyu Lan
2021-06-03 15:37 ` Tianyu Lan
2021-06-03 17:04 ` Boris Ostrovsky
2021-06-03 17:04 ` Boris Ostrovsky
2021-06-07 6:44 ` Christoph Hellwig
2021-06-07 6:44 ` Christoph Hellwig
2021-05-30 15:06 ` [RFC PATCH V3 10/11] HV/Netvsc: Add Isolation VM support for netvsc driver Tianyu Lan
2021-05-30 15:06 ` Tianyu Lan
2021-06-07 6:50 ` Christoph Hellwig
2021-06-07 6:50 ` Christoph Hellwig
2021-06-07 15:21 ` Tianyu Lan
2021-06-07 15:21 ` Tianyu Lan
2021-06-14 7:09 ` Christoph Hellwig
2021-06-14 7:09 ` Christoph Hellwig
2021-06-14 14:04 ` Tianyu Lan
2021-06-14 14:04 ` Tianyu Lan
2021-06-14 15:33 ` Christoph Hellwig
2021-06-14 15:33 ` Christoph Hellwig
2021-06-15 14:31 ` Tianyu Lan
2021-06-15 14:31 ` Tianyu Lan
2021-06-10 9:52 ` Vitaly Kuznetsov
2021-06-10 9:52 ` Vitaly Kuznetsov
2021-05-30 15:06 ` [RFC PATCH V3 11/11] HV/Storvsc: Add Isolation VM support for storvsc driver Tianyu Lan
2021-05-30 15:06 ` Tianyu Lan
2021-06-07 6:46 ` Christoph Hellwig
2021-06-07 6:46 ` Christoph Hellwig
2021-06-07 14:59 ` Tianyu Lan
2021-06-07 14:59 ` Tianyu Lan
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