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author | Stefan Agner <stefan.agner@toradex.com> | 2019-08-16 16:40:08 +0200 |
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committer | Stefan Agner <stefan.agner@toradex.com> | 2019-08-16 16:40:08 +0200 |
commit | 3758b8bd81966b63dc93093a323e9bdd734545fd (patch) | |
tree | 229bda2abe1a31d59da4b48e71aeefde934fe1d0 /include/linux/vmw_vmci_defs.h | |
parent | d15d0b7a9f89cf5a905ad6802eb23100c8063939 (diff) | |
parent | dd209b062b86dd951cf1da93f20aa497fe99d52d (diff) |
Merge tag 'v4.19.59-rt24' into toradex_4.19.y-rttoradex_4.19.y-rt
Linux 4.19.59-rt24
Diffstat (limited to 'include/linux/vmw_vmci_defs.h')
-rw-r--r-- | include/linux/vmw_vmci_defs.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/include/linux/vmw_vmci_defs.h b/include/linux/vmw_vmci_defs.h index b724ef7005de..53c5e40a2a8f 100644 --- a/include/linux/vmw_vmci_defs.h +++ b/include/linux/vmw_vmci_defs.h @@ -68,9 +68,18 @@ enum { /* * A single VMCI device has an upper limit of 128MB on the amount of - * memory that can be used for queue pairs. + * memory that can be used for queue pairs. Since each queue pair + * consists of at least two pages, the memory limit also dictates the + * number of queue pairs a guest can create. */ #define VMCI_MAX_GUEST_QP_MEMORY (128 * 1024 * 1024) +#define VMCI_MAX_GUEST_QP_COUNT (VMCI_MAX_GUEST_QP_MEMORY / PAGE_SIZE / 2) + +/* + * There can be at most PAGE_SIZE doorbells since there is one doorbell + * per byte in the doorbell bitmap page. + */ +#define VMCI_MAX_GUEST_DOORBELL_COUNT PAGE_SIZE /* * Queues with pre-mapped data pages must be small, so that we don't pin |