From 6ba34171bcbd10321c6cf554e0c1144d170f9d1a Mon Sep 17 00:00:00 2001 From: Michael Kelley Date: Thu, 2 Aug 2018 03:08:24 +0000 Subject: Drivers: hv: vmbus: Remove use of slow_virt_to_phys() slow_virt_to_phys() is only implemented for arch/x86. Remove its use in arch independent Hyper-V drivers, and replace with test for vmalloc() address followed by appropriate v-to-p function. This follows the typical pattern of other drivers and avoids the need to implement slow_virt_to_phys() for Hyper-V on ARM64. Signed-off-by: Michael Kelley Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- drivers/hv/channel.c | 27 ++++++++++++++++++++------- 1 file changed, 20 insertions(+), 7 deletions(-) (limited to 'drivers/hv/channel.c') 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 #include #include +#include #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; } -- cgit v1.2.3