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author | Andreas Grapentin <andreas@grapentin.org> | 2018-03-12 22:59:09 +0100 |
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committer | Andreas Grapentin <andreas@grapentin.org> | 2018-03-12 22:59:27 +0100 |
commit | 5fed6ef4ba36f621ad6ff0ab01a32e718641a4f2 (patch) | |
tree | 966af33ed880af8b08e5c9371cee912d6352cc99 /pcr/qemu-user-static-git/0006-linux-user-init_guest_commpage-Add-a-comment-about-s.patch | |
parent | 3d1e990c7f226c166eaffcd70766da105f17f5b4 (diff) | |
download | abslibre-5fed6ef4ba36f621ad6ff0ab01a32e718641a4f2.tar.gz abslibre-5fed6ef4ba36f621ad6ff0ab01a32e718641a4f2.tar.bz2 abslibre-5fed6ef4ba36f621ad6ff0ab01a32e718641a4f2.zip |
pcr/qemu-riscv-* superseded by qemu-git et al.
Diffstat (limited to 'pcr/qemu-user-static-git/0006-linux-user-init_guest_commpage-Add-a-comment-about-s.patch')
-rw-r--r-- | pcr/qemu-user-static-git/0006-linux-user-init_guest_commpage-Add-a-comment-about-s.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/pcr/qemu-user-static-git/0006-linux-user-init_guest_commpage-Add-a-comment-about-s.patch b/pcr/qemu-user-static-git/0006-linux-user-init_guest_commpage-Add-a-comment-about-s.patch new file mode 100644 index 000000000..4436b7817 --- /dev/null +++ b/pcr/qemu-user-static-git/0006-linux-user-init_guest_commpage-Add-a-comment-about-s.patch @@ -0,0 +1,30 @@ +From ca873a81cc020df0ee0ec072a60678bb83dce9e2 Mon Sep 17 00:00:00 2001 +From: Luke Shumaker <lukeshu@parabola.nu> +Date: Wed, 27 Dec 2017 21:05:29 -0500 +Subject: [PATCH 06/10] linux-user: init_guest_commpage: Add a comment about + size check + +Signed-off-by: Luke Shumaker <lukeshu@parabola.nu> +--- + linux-user/elfload.c | 5 +++++ + 1 file changed, 5 insertions(+) + +diff --git a/linux-user/elfload.c b/linux-user/elfload.c +index 22f2632dfa..b560f5d6fe 100644 +--- a/linux-user/elfload.c ++++ b/linux-user/elfload.c +@@ -374,6 +374,11 @@ static int init_guest_commpage(unsigned long guest_base, + + /* If the commpage lies within the already allocated guest space, + * then there is no way we can allocate it. ++ * ++ * You may be thinking that that this check is redundant because ++ * we already validated the guest size against MAX_RESERVED_VA; ++ * but if qemu_host_page_mask is unusually large, then ++ * test_page_addr may be lower. + */ + if (test_page_addr >= guest_base + && test_page_addr < (guest_base + guest_size)) { +-- +2.15.1 + |