Commit-ID: 83527ef7abf7c02c33a90b00f0954db35415adbd Gitweb: https://git.kernel.org/tip/83527ef7abf7c02c33a90b00f0954db35415adbd Author: Maya Nakamura <m.maya.nakamura@xxxxxxxxx> AuthorDate: Fri, 12 Jul 2019 08:25:18 +0000 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitDate: Mon, 22 Jul 2019 11:06:45 +0200 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@xxxxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Reviewed-by: Michael Kelley <mikelley@xxxxxxxxxxxxx> Reviewed-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> Acked-by: Sasha Levin <sashal@xxxxxxxxxx> Link: https://lkml.kernel.org/r/0d9e80ecabcc950dc279fdd2e39bea4060123ba4.1562916939.git.m.maya.nakamura@xxxxxxxxx --- drivers/hv/hyperv_vmbus.h | 8 ++++---- 1 file 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 */
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