diff options
| -rw-r--r-- | drivers/hv/channel.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index c3949220b770..741857d80da1 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -29,12 +29,26 @@ #include <linux/hyperv.h> #include <linux/uio.h> #include <linux/interrupt.h> +#include <asm/page.h> #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) +{ + unsigned long paddr; + + if (is_vmalloc_addr(addr)) + paddr = page_to_phys(vmalloc_to_page(addr)) + + offset_in_page(addr); + else + paddr = __pa(addr); + + return paddr >> PAGE_SHIFT; +} + /* * vmbus_setevent- Trigger an event notification on the specified * channel. @@ -298,8 +312,8 @@ static int create_gpadl_header(void *kbuffer, u32 size, gpadl_header->range[0].byte_offset = 0; gpadl_header->range[0].byte_count = size; for (i = 0; i < pfncount; i++) - gpadl_header->range[0].pfn_array[i] = slow_virt_to_phys( - kbuffer + PAGE_SIZE * i) >> PAGE_SHIFT; + gpadl_header->range[0].pfn_array[i] = virt_to_hvpfn( + kbuffer + PAGE_SIZE * i); *msginfo = msgheader; pfnsum = pfncount; @@ -350,9 +364,8 @@ static int create_gpadl_header(void *kbuffer, u32 size, * so the hypervisor guarantees that this is ok. */ for (i = 0; i < pfncurr; i++) - gpadl_body->pfn[i] = slow_virt_to_phys( - kbuffer + PAGE_SIZE * (pfnsum + i)) >> - PAGE_SHIFT; + gpadl_body->pfn[i] = virt_to_hvpfn( + kbuffer + PAGE_SIZE * (pfnsum + i)); /* add to msg header */ list_add_tail(&msgbody->msglistentry, @@ -380,8 +393,8 @@ static int create_gpadl_header(void *kbuffer, u32 size, gpadl_header->range[0].byte_offset = 0; gpadl_header->range[0].byte_count = size; for (i = 0; i < pagecount; i++) - gpadl_header->range[0].pfn_array[i] = slow_virt_to_phys( - kbuffer + PAGE_SIZE * i) >> PAGE_SHIFT; + gpadl_header->range[0].pfn_array[i] = virt_to_hvpfn( + kbuffer + PAGE_SIZE * i); *msginfo = msgheader; } |