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| author | Maya Nakamura <m.maya.nakamura@gmail.com> | 2019-07-12 10:25:18 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-07-22 11:06:45 +0200 |
| commit | 83527ef7abf7c02c33a90b00f0954db35415adbd (patch) | |
| tree | c13e1ce4981782d48536945a66c5449bd8507a37 /drivers/hv/hyperv_vmbus.h | |
| parent | x86/hyperv: Add functions to allocate/deallocate page for Hyper-V (diff) | |
| download | linux-83527ef7abf7c02c33a90b00f0954db35415adbd.tar.xz linux-83527ef7abf7c02c33a90b00f0954db35415adbd.zip | |
drivers: hv: vmbus: Replace page definition with Hyper-V specific one
Replace PAGE_SIZE with HV_HYP_PAGE_SIZE because the guest page size may not
be 4096 on all architectures and Hyper-V always runs with a page size of
4096.
Signed-off-by: Maya Nakamura <m.maya.nakamura@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Acked-by: Sasha Levin <sashal@kernel.org>
Link: https://lkml.kernel.org/r/0d9e80ecabcc950dc279fdd2e39bea4060123ba4.1562916939.git.m.maya.nakamura@gmail.com
Diffstat (limited to 'drivers/hv/hyperv_vmbus.h')
| -rw-r--r-- | drivers/hv/hyperv_vmbus.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 362e70e9d145..6bf64cb6e31a 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -192,11 +192,11 @@ int hv_ringbuffer_read(struct vmbus_channel *channel, u64 *requestid, bool raw); /* - * Maximum channels is determined by the size of the interrupt page - * which is PAGE_SIZE. 1/2 of PAGE_SIZE is for send endpoint interrupt - * and the other is receive endpoint interrupt + * The Maximum number of channels (16348) is determined by the size of the + * interrupt page, which is HV_HYP_PAGE_SIZE. 1/2 of HV_HYP_PAGE_SIZE is to + * send endpoint interrupts, and the other is to receive endpoint interrupts. */ -#define MAX_NUM_CHANNELS ((PAGE_SIZE >> 1) << 3) /* 16348 channels */ +#define MAX_NUM_CHANNELS ((HV_HYP_PAGE_SIZE >> 1) << 3) /* The value here must be in multiple of 32 */ /* TODO: Need to make this configurable */ |