On 4/14/2021 11:45 PM, Greg KH wrote:
On Wed, Apr 14, 2021 at 10:49:41AM -0400, Tianyu Lan wrote:
From: Tianyu Lan
UIO HV driver should not load in the isolation VM for security reason.
Return ENOTSUPP in the hv_uio_probe() in the isolation VM.
Signed-off-by: Tianyu Lan
---
drivers/uio
Hi Stephen:
Thanks for your review.
On 4/15/2021 12:17 AM, Stephen Hemminger wrote:
On Wed, 14 Apr 2021 17:45:51 +0200
Greg KH wrote:
On Wed, Apr 14, 2021 at 10:49:41AM -0400, Tianyu Lan wrote:
From: Tianyu Lan
UIO HV driver should not load in the isolation VM for security reason
On 4/14/2021 11:50 PM, Christoph Hellwig wrote:
+struct dma_range {
+ dma_addr_t dma;
+ u32 mapping_size;
+};
That's a rather generic name that is bound to create a conflict sooner
or later.
Good point. Will update.
#include "hyperv_net.h"
#include "netvsc_trace.h"
+#in
On 4/14/2021 11:41 PM, Christoph Hellwig wrote:
+EXPORT_SYMBOL_GPL(hv_ghcb_msr_write);
Just curious, who is going to use all these exports? These seems like
extremely low-level functionality. Isn't there a way to build a more
useful higher level API?
Yes, will remove it.
Hi Christoph:
Thanks for your review.
On 4/14/2021 11:40 PM, Christoph Hellwig wrote:
+/*
+ * hv_set_mem_host_visibility - Set host visibility for specified memory.
+ */
I don't think this comment really clarifies anything over the function
name. What is 'host visibility'
OK. Will u
From: Tianyu Lan
In Isolation VM, all shared memory with host needs to mark visible
to host via hvcall. vmbus_establish_gpadl() has already done it for
netvsc rx/tx ring buffer. The page buffer used by vmbus_sendpacket_
mpb_desc() still need to handle. Use DMA API to map/umap these
memory during
From: Tianyu Lan
In Isolation VM, all shared memory with host needs to mark visible
to host via hvcall. vmbus_establish_gpadl() has already done it for
netvsc rx/tx ring buffer. The page buffer used by vmbus_sendpacket_
pagebuffer() still need to handle. Use DMA API to map/umap these
memory
From: Tianyu Lan
Hyper-V Isolation VM requires bounce buffer support. To use swiotlb
bounce buffer, add Hyper-V dma ops and use swiotlb functions in the
map and unmap callback.
Allocate bounce buffer in the Hyper-V code because bounce buffer
needs to be accessed via extra address space(e.g
From: Tianyu Lan
UIO HV driver should not load in the isolation VM for security reason.
Return ENOTSUPP in the hv_uio_probe() in the isolation VM.
Signed-off-by: Tianyu Lan
---
drivers/uio/uio_hv_generic.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/drivers/uio/uio_hv_generic.c b
From: Tianyu Lan
For Hyper-V isolation VM with AMD SEV SNP, the bounce buffer(shared memory)
needs to be accessed via extra address space(e.g address above bit39).
Hyper-V code may remap extra address space outside of swiotlb. swiotlb_bounce()
needs to use remap virtual address to copy data from
From: Tianyu Lan
The physical address of monitor pages in the CHANNELMSG_INITIATE_CONTACT
msg should be in the extra address space for SNP support and these
pages also should be accessed via the extra address space inside Linux
guest and remap the extra address by ioremap function.
Signed-off
From: Tianyu Lan
Hyper-V provides ghcb hvcall to handle VMBus
HVCALL_SIGNAL_EVENT and HVCALL_POST_MESSAGE
msg in SNP Isolation VM. Add such support.
Signed-off-by: Tianyu Lan
---
arch/x86/hyperv/ivm.c | 69 +
arch/x86/include/asm/mshyperv.h | 1
From: Tianyu Lan
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
From: Tianyu Lan
Hyper-V provides GHCB protocol to write Synthetic Interrupt
Controller MSR registers and these registers are emulated by
Hypervisor rather than paravisor.
Hyper-V requests to write SINTx MSR registers twice(once via
GHCB and once via wrmsr instruction including the proxy bit 21
From: Tianyu Lan
Add new hvcall guest address host visibility support. Mark vmbus
ring buffer visible to host when create gpadl buffer and mark back
to not visible when tear down gpadl buffer.
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Tianyu Lan
---
arch/x86/hyperv/Makefile
From: Tianyu Lan
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 AMD SEV SNP guest.
Signed-off-by: Tianyu Lan
---
arch/x86/kernel/cpu/mshyperv.c | 2
From: Tianyu Lan
Hyper-V exposes GHCB page via SEV ES GHCB MSR for SNP guest
to communicate with hypervisor. Map GHCB page for all
cpus to read/write MSR register and submit hvcall request
via GHCB.
Signed-off-by: Tianyu Lan
---
arch/x86/hyperv/hv_init.c | 52
From: Tianyu Lan
"Resend all patches because someone in CC list didn't receive all
patchset. Sorry for nosy."
Hyper-V provides two kinds of Isolation VMs. VBS(Virtualization-based
security) and AMD SEV-SNP unenlightened Isolation VMs. This patchset
is to add support for the
From: Tianyu Lan
Hyper-V provides two kinds of Isolation VMs. VBS(Virtualization-based
security) and AMD SEV-SNP unenlightened Isolation VMs. This patchset
is to add support for these Isolation VM support in Linux.
The memory of these vms are encrypted and host can't access guest
m
From: Tianyu Lan
In Isolation VM, all shared memory with host needs to mark visible
to host via hvcall. vmbus_establish_gpadl() has already done it for
netvsc rx/tx ring buffer. The page buffer used by vmbus_sendpacket_
pagebuffer() still need to handle. Use DMA API to map/umap these
memory
On 3/4/2021 12:58 AM, Vitaly Kuznetsov wrote:
Tianyu Lan writes:
From: Tianyu Lan
Add new hvcall guest address host visibility support. Mark vmbus
ring buffer visible to host when create gpadl buffer and mark back
to not visible when tear down gpadl buffer.
Signed-off-by: Sunil
Hi Vitaly:
Thanks for your review.
On 3/4/2021 12:27 AM, Vitaly Kuznetsov wrote:
Tianyu Lan writes:
From: Tianyu Lan
Add visibility parameter for vmbus_establish_gpadl() and prepare
to change host visibility when create gpadl for buffer.
"No functional change" as you don&
From: Tianyu Lan
Add new parameter io_type and struct bounce_pkt for
vmbus_sendpacket_pagebuffer()
and vmbus_sendpacket_mpb_desc() in order to add bounce buffer support
later.
Signed-off-by: Sunil Muthuswamy
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Tianyu Lan
---
drivers/hv
From: Tianyu Lan
Add Isolation VM support for netvsc driver. Map send/receive
ring buffer in extra address space in SNP isolation VM, reserve
bounce buffer for packets sent via vmbus_sendpacket_pagebuffer()
and release bounce buffer via hv_pkt_bounce() when get send
complete response from host
From: Tianyu Lan
Add new hvcall guest address host visibility support. Mark vmbus
ring buffer visible to host when create gpadl buffer and mark back
to not visible when tear down gpadl buffer.
Signed-off-by: Sunil Muthuswamy
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Tianyu Lan
From: Tianyu Lan
Hyper-V provides two kinds of Isolation VMs. VBS(Virtualization-based
security) and AMD SEV-SNP unenlightened Isolation VMs. This patchset
is to add support for these Isolation VM support in Linux.
The memory of these vms are encrypted and host can't access guest
m
From: Tianyu Lan
Add visibility parameter for vmbus_establish_gpadl() and prepare
to change host visibility when create gpadl for buffer.
Signed-off-by: Sunil Muthuswamy
Co-Developed-by: Sunil Muthuswamy
Signed-off-by: Tianyu Lan
---
arch/x86/include/asm/hyperv-tlfs.h | 9
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