Skip to content

use kmap atomic for kernels past 2.6.37 #80

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Mar 21, 2021
Merged

use kmap atomic for kernels past 2.6.37 #80

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 4 additions & 0 deletions src/lime.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -76,6 +76,10 @@
#define LIME_SUPPORTS_TIMING
#endif

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
#define LIME_USE_KMAP_ATOMIC
#endif

#ifdef CONFIG_ZLIB_DEFLATE
#define LIME_SUPPORTS_DEFLATE
#endif
Expand Down
7 changes: 7 additions & 0 deletions src/main.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -288,6 +288,12 @@ static void write_range(struct resource * res) {
DBG("Padding partial page: vaddr %p size: %lu", (void *) i, (unsigned long) is);
write_padding(is);
} else {
#ifdef LIME_USE_KMAP_ATOMIC
v = kmap_atomic(p);
copy_page(vpage, v);
kunmap_atomic(v);
s = write_vaddr(vpage, is);
#else
v = kmap(p);
/*
* If we need to compute the digest or compress the output
Expand All @@ -300,6 +306,7 @@ static void write_range(struct resource * res) {
s = write_vaddr(v, is);
}
kunmap(p);
#endif

if (s < 0) {
DBG("Failed to write page: vaddr %p. Skipping Range...", v);
Expand Down