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| author | Boqun Feng <boqun.feng@gmail.com> | 2020-09-16 06:48:07 +0300 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2020-09-28 11:55:12 +0300 |
| commit | a5dda201a0384e577884d9427dc60a336ced216f (patch) | |
| tree | 84fc2a76a7cc0c54ef619a3d32a12f1508c85769 /drivers/hv/channel.c | |
| parent | 49971e6bad2da980686368baa34039907f62b516 (diff) | |
| download | linux-a5dda201a0384e577884d9427dc60a336ced216f.tar.xz | |
Drivers: hv: vmbus: Always use HV_HYP_PAGE_SIZE for gpadl
Since the hypervisor always uses 4K as its page size, the size of PFNs
used for gpadl should be HV_HYP_PAGE_SIZE rather than PAGE_SIZE, so
adjust this accordingly as the preparation for supporting 16K/64K page
size guests. No functional changes on x86, since PAGE_SIZE is always 4k
(equals to HV_HYP_PAGE_SIZE).
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20200916034817.30282-2-boqun.feng@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'drivers/hv/channel.c')
| -rw-r--r-- | drivers/hv/channel.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index 3ebda7707e46..4d0f8e5a88d6 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -22,9 +22,6 @@ #include "hyperv_vmbus.h" -#define NUM_PAGES_SPANNED(addr, len) \ -((PAGE_ALIGN(addr + len) >> PAGE_SHIFT) - (addr >> PAGE_SHIFT)) - static unsigned long virt_to_hvpfn(void *addr) { phys_addr_t paddr; @@ -35,7 +32,7 @@ static unsigned long virt_to_hvpfn(void *addr) else paddr = __pa(addr); - return paddr >> PAGE_SHIFT; + return paddr >> HV_HYP_PAGE_SHIFT; } /* @@ -330,7 +327,7 @@ static int create_gpadl_header(void *kbuffer, u32 size, int pfnsum, pfncount, pfnleft, pfncurr, pfnsize; - pagecount = size >> PAGE_SHIFT; + pagecount = size >> HV_HYP_PAGE_SHIFT; /* do we need a gpadl body msg */ pfnsize = MAX_SIZE_CHANNEL_MESSAGE - @@ -360,7 +357,7 @@ static int create_gpadl_header(void *kbuffer, u32 size, gpadl_header->range[0].byte_count = size; for (i = 0; i < pfncount; i++) gpadl_header->range[0].pfn_array[i] = virt_to_hvpfn( - kbuffer + PAGE_SIZE * i); + kbuffer + HV_HYP_PAGE_SIZE * i); *msginfo = msgheader; pfnsum = pfncount; @@ -412,7 +409,7 @@ static int create_gpadl_header(void *kbuffer, u32 size, */ for (i = 0; i < pfncurr; i++) gpadl_body->pfn[i] = virt_to_hvpfn( - kbuffer + PAGE_SIZE * (pfnsum + i)); + kbuffer + HV_HYP_PAGE_SIZE * (pfnsum + i)); /* add to msg header */ list_add_tail(&msgbody->msglistentry, @@ -441,7 +438,7 @@ static int create_gpadl_header(void *kbuffer, u32 size, gpadl_header->range[0].byte_count = size; for (i = 0; i < pagecount; i++) gpadl_header->range[0].pfn_array[i] = virt_to_hvpfn( - kbuffer + PAGE_SIZE * i); + kbuffer + HV_HYP_PAGE_SIZE * i); *msginfo = msgheader; } |