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, 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 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, thomas.lendacky@amd.com, brijesh.singh@amd.com, sunilmut@microsoft.com Subject: [RFC PATCH V3 07/11] HV/Vmbus: Initialize VMbus ring buffer for Isolation VM Date: Sun, 30 May 2021 11:06:24 -0400 [thread overview] Message-ID: <20210530150628.2063957-8-ltykernel@gmail.com> (raw) In-Reply-To: <20210530150628.2063957-1-ltykernel@gmail.com> From: Tianyu Lan <Tianyu.Lan@microsoft.com> VMbus ring buffer are shared with host and it's need to be accessed via extra address space of Isolation VM with SNP support. This patch is to map the ring buffer address in extra address space via ioremap(). HV host visibility hvcall smears data in the ring buffer and so reset the ring buffer memory to zero after calling visibility hvcall. Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> --- drivers/hv/Kconfig | 1 + drivers/hv/channel.c | 10 +++++ drivers/hv/hyperv_vmbus.h | 2 + drivers/hv/ring_buffer.c | 84 ++++++++++++++++++++++++++++++--------- 4 files changed, 79 insertions(+), 18 deletions(-) diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig index 66c794d92391..a8386998be40 100644 --- a/drivers/hv/Kconfig +++ b/drivers/hv/Kconfig @@ -7,6 +7,7 @@ config HYPERV depends on X86 && ACPI && X86_LOCAL_APIC && HYPERVISOR_GUEST select PARAVIRT select X86_HV_CALLBACK_VECTOR + select VMAP_PFN help Select this option to run Linux as a Hyper-V client operating system. diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index 01048bb07082..7350da9dbe97 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -707,6 +707,16 @@ static int __vmbus_open(struct vmbus_channel *newchannel, if (err) goto error_clean_ring; + err = hv_ringbuffer_post_init(&newchannel->outbound, + page, send_pages); + if (err) + goto error_free_gpadl; + + err = hv_ringbuffer_post_init(&newchannel->inbound, + &page[send_pages], recv_pages); + if (err) + goto error_free_gpadl; + /* Create and init the channel open message */ open_info = kzalloc(sizeof(*open_info) + sizeof(struct vmbus_channel_open_channel), diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 40bc0eff6665..15cd23a561f3 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -172,6 +172,8 @@ extern int hv_synic_cleanup(unsigned int cpu); /* Interface */ void hv_ringbuffer_pre_init(struct vmbus_channel *channel); +int hv_ringbuffer_post_init(struct hv_ring_buffer_info *ring_info, + struct page *pages, u32 page_cnt); int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, struct page *pages, u32 pagecnt, u32 max_pkt_size); diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c index 2aee356840a2..d4f93fca1108 100644 --- a/drivers/hv/ring_buffer.c +++ b/drivers/hv/ring_buffer.c @@ -17,6 +17,8 @@ #include <linux/vmalloc.h> #include <linux/slab.h> #include <linux/prefetch.h> +#include <linux/io.h> +#include <asm/mshyperv.h> #include "hyperv_vmbus.h" @@ -179,43 +181,89 @@ void hv_ringbuffer_pre_init(struct vmbus_channel *channel) mutex_init(&channel->outbound.ring_buffer_mutex); } -/* Initialize the ring buffer. */ -int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, - struct page *pages, u32 page_cnt, u32 max_pkt_size) +int hv_ringbuffer_post_init(struct hv_ring_buffer_info *ring_info, + struct page *pages, u32 page_cnt) { + u64 physic_addr = page_to_pfn(pages) << PAGE_SHIFT; + unsigned long *pfns_wraparound; + void *vaddr; int i; - struct page **pages_wraparound; - BUILD_BUG_ON((sizeof(struct hv_ring_buffer) != PAGE_SIZE)); + if (!hv_isolation_type_snp()) + return 0; + + physic_addr += ms_hyperv.shared_gpa_boundary; /* * First page holds struct hv_ring_buffer, do wraparound mapping for * the rest. */ - pages_wraparound = kcalloc(page_cnt * 2 - 1, sizeof(struct page *), + pfns_wraparound = kcalloc(page_cnt * 2 - 1, sizeof(unsigned long), GFP_KERNEL); - if (!pages_wraparound) + if (!pfns_wraparound) return -ENOMEM; - pages_wraparound[0] = pages; + pfns_wraparound[0] = physic_addr >> PAGE_SHIFT; for (i = 0; i < 2 * (page_cnt - 1); i++) - pages_wraparound[i + 1] = &pages[i % (page_cnt - 1) + 1]; - - ring_info->ring_buffer = (struct hv_ring_buffer *) - vmap(pages_wraparound, page_cnt * 2 - 1, VM_MAP, PAGE_KERNEL); - - kfree(pages_wraparound); + pfns_wraparound[i + 1] = (physic_addr >> PAGE_SHIFT) + + i % (page_cnt - 1) + 1; - - if (!ring_info->ring_buffer) + vaddr = vmap_pfn(pfns_wraparound, page_cnt * 2 - 1, PAGE_KERNEL_IO); + kfree(pfns_wraparound); + if (!vaddr) return -ENOMEM; - ring_info->ring_buffer->read_index = - ring_info->ring_buffer->write_index = 0; + /* Clean memory after setting host visibility. */ + memset((void *)vaddr, 0x00, page_cnt * PAGE_SIZE); + + ring_info->ring_buffer = (struct hv_ring_buffer *)vaddr; + ring_info->ring_buffer->read_index = 0; + ring_info->ring_buffer->write_index = 0; /* Set the feature bit for enabling flow control. */ ring_info->ring_buffer->feature_bits.value = 1; + return 0; +} + +/* Initialize the ring buffer. */ +int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, + struct page *pages, u32 page_cnt, u32 max_pkt_size) +{ + int i; + struct page **pages_wraparound; + + BUILD_BUG_ON((sizeof(struct hv_ring_buffer) != PAGE_SIZE)); + + if (!hv_isolation_type_snp()) { + /* + * First page holds struct hv_ring_buffer, do wraparound mapping for + * the rest. + */ + pages_wraparound = kcalloc(page_cnt * 2 - 1, sizeof(struct page *), + GFP_KERNEL); + if (!pages_wraparound) + return -ENOMEM; + + pages_wraparound[0] = pages; + for (i = 0; i < 2 * (page_cnt - 1); i++) + pages_wraparound[i + 1] = &pages[i % (page_cnt - 1) + 1]; + + ring_info->ring_buffer = (struct hv_ring_buffer *) + vmap(pages_wraparound, page_cnt * 2 - 1, VM_MAP, PAGE_KERNEL); + + kfree(pages_wraparound); + + if (!ring_info->ring_buffer) + return -ENOMEM; + + ring_info->ring_buffer->read_index = + ring_info->ring_buffer->write_index = 0; + + /* Set the feature bit for enabling flow control. */ + ring_info->ring_buffer->feature_bits.value = 1; + } + ring_info->ring_size = page_cnt << PAGE_SHIFT; ring_info->ring_size_div10_reciprocal = reciprocal_value(ring_info->ring_size / 10); -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
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, 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 Cc: linux-arch@vger.kernel.org, thomas.lendacky@amd.com, linux-hyperv@vger.kernel.org, brijesh.singh@amd.com, linux-scsi@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, vkuznets@redhat.com, sunilmut@microsoft.com Subject: [RFC PATCH V3 07/11] HV/Vmbus: Initialize VMbus ring buffer for Isolation VM Date: Sun, 30 May 2021 11:06:24 -0400 [thread overview] Message-ID: <20210530150628.2063957-8-ltykernel@gmail.com> (raw) In-Reply-To: <20210530150628.2063957-1-ltykernel@gmail.com> From: Tianyu Lan <Tianyu.Lan@microsoft.com> VMbus ring buffer are shared with host and it's need to be accessed via extra address space of Isolation VM with SNP support. This patch is to map the ring buffer address in extra address space via ioremap(). HV host visibility hvcall smears data in the ring buffer and so reset the ring buffer memory to zero after calling visibility hvcall. Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> --- drivers/hv/Kconfig | 1 + drivers/hv/channel.c | 10 +++++ drivers/hv/hyperv_vmbus.h | 2 + drivers/hv/ring_buffer.c | 84 ++++++++++++++++++++++++++++++--------- 4 files changed, 79 insertions(+), 18 deletions(-) diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig index 66c794d92391..a8386998be40 100644 --- a/drivers/hv/Kconfig +++ b/drivers/hv/Kconfig @@ -7,6 +7,7 @@ config HYPERV depends on X86 && ACPI && X86_LOCAL_APIC && HYPERVISOR_GUEST select PARAVIRT select X86_HV_CALLBACK_VECTOR + select VMAP_PFN help Select this option to run Linux as a Hyper-V client operating system. diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index 01048bb07082..7350da9dbe97 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -707,6 +707,16 @@ static int __vmbus_open(struct vmbus_channel *newchannel, if (err) goto error_clean_ring; + err = hv_ringbuffer_post_init(&newchannel->outbound, + page, send_pages); + if (err) + goto error_free_gpadl; + + err = hv_ringbuffer_post_init(&newchannel->inbound, + &page[send_pages], recv_pages); + if (err) + goto error_free_gpadl; + /* Create and init the channel open message */ open_info = kzalloc(sizeof(*open_info) + sizeof(struct vmbus_channel_open_channel), diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 40bc0eff6665..15cd23a561f3 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -172,6 +172,8 @@ extern int hv_synic_cleanup(unsigned int cpu); /* Interface */ void hv_ringbuffer_pre_init(struct vmbus_channel *channel); +int hv_ringbuffer_post_init(struct hv_ring_buffer_info *ring_info, + struct page *pages, u32 page_cnt); int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, struct page *pages, u32 pagecnt, u32 max_pkt_size); diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c index 2aee356840a2..d4f93fca1108 100644 --- a/drivers/hv/ring_buffer.c +++ b/drivers/hv/ring_buffer.c @@ -17,6 +17,8 @@ #include <linux/vmalloc.h> #include <linux/slab.h> #include <linux/prefetch.h> +#include <linux/io.h> +#include <asm/mshyperv.h> #include "hyperv_vmbus.h" @@ -179,43 +181,89 @@ void hv_ringbuffer_pre_init(struct vmbus_channel *channel) mutex_init(&channel->outbound.ring_buffer_mutex); } -/* Initialize the ring buffer. */ -int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, - struct page *pages, u32 page_cnt, u32 max_pkt_size) +int hv_ringbuffer_post_init(struct hv_ring_buffer_info *ring_info, + struct page *pages, u32 page_cnt) { + u64 physic_addr = page_to_pfn(pages) << PAGE_SHIFT; + unsigned long *pfns_wraparound; + void *vaddr; int i; - struct page **pages_wraparound; - BUILD_BUG_ON((sizeof(struct hv_ring_buffer) != PAGE_SIZE)); + if (!hv_isolation_type_snp()) + return 0; + + physic_addr += ms_hyperv.shared_gpa_boundary; /* * First page holds struct hv_ring_buffer, do wraparound mapping for * the rest. */ - pages_wraparound = kcalloc(page_cnt * 2 - 1, sizeof(struct page *), + pfns_wraparound = kcalloc(page_cnt * 2 - 1, sizeof(unsigned long), GFP_KERNEL); - if (!pages_wraparound) + if (!pfns_wraparound) return -ENOMEM; - pages_wraparound[0] = pages; + pfns_wraparound[0] = physic_addr >> PAGE_SHIFT; for (i = 0; i < 2 * (page_cnt - 1); i++) - pages_wraparound[i + 1] = &pages[i % (page_cnt - 1) + 1]; - - ring_info->ring_buffer = (struct hv_ring_buffer *) - vmap(pages_wraparound, page_cnt * 2 - 1, VM_MAP, PAGE_KERNEL); - - kfree(pages_wraparound); + pfns_wraparound[i + 1] = (physic_addr >> PAGE_SHIFT) + + i % (page_cnt - 1) + 1; - - if (!ring_info->ring_buffer) + vaddr = vmap_pfn(pfns_wraparound, page_cnt * 2 - 1, PAGE_KERNEL_IO); + kfree(pfns_wraparound); + if (!vaddr) return -ENOMEM; - ring_info->ring_buffer->read_index = - ring_info->ring_buffer->write_index = 0; + /* Clean memory after setting host visibility. */ + memset((void *)vaddr, 0x00, page_cnt * PAGE_SIZE); + + ring_info->ring_buffer = (struct hv_ring_buffer *)vaddr; + ring_info->ring_buffer->read_index = 0; + ring_info->ring_buffer->write_index = 0; /* Set the feature bit for enabling flow control. */ ring_info->ring_buffer->feature_bits.value = 1; + return 0; +} + +/* Initialize the ring buffer. */ +int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, + struct page *pages, u32 page_cnt, u32 max_pkt_size) +{ + int i; + struct page **pages_wraparound; + + BUILD_BUG_ON((sizeof(struct hv_ring_buffer) != PAGE_SIZE)); + + if (!hv_isolation_type_snp()) { + /* + * First page holds struct hv_ring_buffer, do wraparound mapping for + * the rest. + */ + pages_wraparound = kcalloc(page_cnt * 2 - 1, sizeof(struct page *), + GFP_KERNEL); + if (!pages_wraparound) + return -ENOMEM; + + pages_wraparound[0] = pages; + for (i = 0; i < 2 * (page_cnt - 1); i++) + pages_wraparound[i + 1] = &pages[i % (page_cnt - 1) + 1]; + + ring_info->ring_buffer = (struct hv_ring_buffer *) + vmap(pages_wraparound, page_cnt * 2 - 1, VM_MAP, PAGE_KERNEL); + + kfree(pages_wraparound); + + if (!ring_info->ring_buffer) + return -ENOMEM; + + ring_info->ring_buffer->read_index = + ring_info->ring_buffer->write_index = 0; + + /* Set the feature bit for enabling flow control. */ + ring_info->ring_buffer->feature_bits.value = 1; + } + ring_info->ring_size = page_cnt << PAGE_SHIFT; ring_info->ring_size_div10_reciprocal = reciprocal_value(ring_info->ring_size / 10); -- 2.25.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2021-05-30 15:07 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 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 ` Tianyu Lan [this message] 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 ` [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
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=20210530150628.2063957-8-ltykernel@gmail.com \ --to=ltykernel@gmail.com \ --cc=Tianyu.Lan@microsoft.com \ --cc=akpm@linux-foundation.org \ --cc=arnd@arndb.de \ --cc=boris.ostrovsky@oracle.com \ --cc=bp@alien8.de \ --cc=brijesh.singh@amd.com \ --cc=cai@lca.pw \ --cc=dave.hansen@linux.intel.com \ --cc=davem@davemloft.net \ --cc=decui@microsoft.com \ --cc=haiyangz@microsoft.com \ --cc=hannes@cmpxchg.org \ --cc=hch@lst.de \ --cc=hpa@zytor.com \ --cc=iommu@lists.linux-foundation.org \ --cc=jejb@linux.ibm.com \ --cc=jgross@suse.com \ --cc=joro@8bytes.org \ --cc=kirill.shutemov@linux.intel.com \ --cc=konrad.wilk@oracle.com \ --cc=krish.sadhukhan@oracle.com \ --cc=kuba@kernel.org \ --cc=kys@microsoft.com \ --cc=linux-arch@vger.kernel.org \ --cc=linux-hyperv@vger.kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-scsi@vger.kernel.org \ --cc=luto@kernel.org \ --cc=m.szyprowski@samsung.com \ --cc=martin.petersen@oracle.com \ --cc=mingo@redhat.com \ --cc=netdev@vger.kernel.org \ --cc=peterz@infradead.org \ --cc=robin.murphy@arm.com \ --cc=rppt@kernel.org \ --cc=saravanand@fb.com \ --cc=sstabellini@kernel.org \ --cc=sthemmin@microsoft.com \ --cc=sunilmut@microsoft.com \ --cc=tglx@linutronix.de \ --cc=thomas.lendacky@amd.com \ --cc=vkuznets@redhat.com \ --cc=wei.liu@kernel.org \ --cc=will@kernel.org \ --cc=x86@kernel.org \ --cc=xen-devel@lists.xenproject.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.