gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mcexec_transfer_image(): map exact size of remote memory (instead of forcing PAGE_SIZE)

Browse Source 
Change-Id: Ic66770af6cdb15b7a2e18a08cbcd1736e5558bdf
This commit is contained in:
Balazs Gerofi
2021-02-03 10:24:36 +09:00
committed by Masamichi Takagi
parent 1cea75dd51
commit 3d71c6a8eb
1 changed files with 7 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
executer/kernel/mcctrl/control.c
View File

@ -270,16 +270,17 @@ int mcexec_transfer_image(ihk_os_t os, struct remote_transfer *__user upt)
return -EFAULT;
}
#ifdef CONFIG_MIC
if (pt.size > PAGE_SIZE) {
printk("mcexec_transfer_image(): ERROR: size exceeds PAGE_SIZE\n");
return -EFAULT;
}
phys = ihk_device_map_memory(ihk_os_to_dev(os), pt.rphys, PAGE_SIZE);
#ifdef CONFIG_MIC
rpm = ioremap_wc(phys, PAGE_SIZE);
#else
rpm = ihk_device_map_virtual(ihk_os_to_dev(os), phys, PAGE_SIZE, NULL, 0);
phys = ihk_device_map_memory(ihk_os_to_dev(os), pt.rphys, pt.size);
rpm = ihk_device_map_virtual(ihk_os_to_dev(os), phys, pt.size, NULL, 0);
#endif
if (!rpm) {
@ -304,10 +305,11 @@ int mcexec_transfer_image(ihk_os_t os, struct remote_transfer *__user upt)
#ifdef CONFIG_MIC
iounmap(rpm);
ihk_device_unmap_memory(ihk_os_to_dev(os), phys, PAGE_SIZE);
#else
ihk_device_unmap_virtual(ihk_os_to_dev(os), rpm, PAGE_SIZE);
ihk_device_unmap_virtual(ihk_os_to_dev(os), rpm, pt.size);
ihk_device_unmap_memory(ihk_os_to_dev(os), phys, pt.size);
#endif
ihk_device_unmap_memory(ihk_os_to_dev(os), phys, PAGE_SIZE);
return ret;