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author | Brijesh Singh <brijesh.singh@amd.com> | 2017-08-23 06:57:18 -0400 |
---|---|---|
committer | Laszlo Ersek <lersek@redhat.com> | 2017-08-25 10:42:19 +0200 |
commit | b0338c53297cfbabd727f36c4878379c86cf4ddc (patch) | |
tree | c69e78fd99fa8db762b86a9968bf427cd890ecb1 /OvmfPkg/Include/Library/VirtioLib.h | |
parent | fef6becb55355c2f6cf0a99f6e7e564d3165ee49 (diff) | |
download | edk2-b0338c53297cfbabd727f36c4878379c86cf4ddc.zip edk2-b0338c53297cfbabd727f36c4878379c86cf4ddc.tar.gz edk2-b0338c53297cfbabd727f36c4878379c86cf4ddc.tar.bz2 |
OvmfPkg/VirtioLib: alloc VRING buffer with AllocateSharedPages()
The VRING buffer is a communication area between guest and hypervisor.
Allocate it using VIRTIO_DEVICE_PROTOCOL.AllocateSharedPages() so that
it can be mapped later with VirtioRingMap() for bi-directional access.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
[lersek@redhat.com: correct typo in VirtioRingInit() comment blocks]
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
Diffstat (limited to 'OvmfPkg/Include/Library/VirtioLib.h')
-rw-r--r-- | OvmfPkg/Include/Library/VirtioLib.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/OvmfPkg/Include/Library/VirtioLib.h b/OvmfPkg/Include/Library/VirtioLib.h index 6a422de..547b4ee 100644 --- a/OvmfPkg/Include/Library/VirtioLib.h +++ b/OvmfPkg/Include/Library/VirtioLib.h @@ -42,9 +42,8 @@ @param[out] Ring The virtio ring to set up.
- @retval EFI_OUT_OF_RESOURCES AllocatePages() failed to allocate contiguous
- pages for the requested QueueSize. Fields of
- Ring have indeterminate value.
+ @return Status codes propagated from
+ VirtIo->AllocateSharedPages().
@retval EFI_SUCCESS Allocation and setup successful. Ring->Base
(and nothing else) is responsible for
|