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| author | Thomas Weißschuh <thomas@t-8ch.de> | 2023-04-22 12:03:14 +0200 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2023-05-17 07:20:29 +0200 |
| commit | f443a26cc6c077f792a5114c5229020ecf44ba3b (patch) | |
| tree | 25b29abbc2f4858e0a3efa44e20c6c9ab095acf8 /hw/arm/virt.c | |
| parent | 64d06015f6f44e3338af0ab2968ef7467dd2f3ef (diff) | |
linux-user: Don't require PROT_READ for mincore
The kernel does not require PROT_READ for addresses passed to mincore.
For example the fincore(1) tool from util-linux uses PROT_NONE and
currently does not work under qemu-user.
Example (with fincore(1) from util-linux 2.38):
$ fincore /proc/self/exe
RES PAGES SIZE FILE
24K 6 22.1K /proc/self/exe
$ qemu-x86_64 /usr/bin/fincore /proc/self/exe
fincore: failed to do mincore: /proc/self/exe: Cannot allocate memory
With this patch:
$ ./build/qemu-x86_64 /usr/bin/fincore /proc/self/exe
RES PAGES SIZE FILE
24K 6 22.1K /proc/self/exe
Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20230422100314.1650-3-thomas@t-8ch.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'hw/arm/virt.c')
0 files changed, 0 insertions, 0 deletions