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| author | Paolo Bonzini <pbonzini@redhat.com> | 2014-02-07 15:47:46 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-02-10 18:10:43 +0000 |
| commit | a87f39543a9259f671c5413723311180ee2ad2a8 (patch) | |
| tree | 53c42691028566ae1d64a4a911b151d97c55ad35 /qapi/string-output-visitor.c | |
| parent | 1f6b12f75f2c22f861d0202374033a7594c91707 (diff) | |
| download | focaccia-qemu-a87f39543a9259f671c5413723311180ee2ad2a8.tar.gz focaccia-qemu-a87f39543a9259f671c5413723311180ee2ad2a8.zip | |
memory: fix limiting of translation at a page boundary
Commit 360e607 (address_space_translate: do not cross page boundaries, 2014-01-30) broke MMIO accesses in cases where the section is shorter than the full register width. This can happen for example with the Bochs DISPI registers, which are 16 bits wide but have only a 1-byte long MemoryRegion (if you write to the "second byte" of the register your access is discarded; it doesn't write only to half of the register). Restrict the action of commit 360e607 to direct RAM accesses. This is enough for Xen, since MMIO will not go through the mapcache. Reported-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'qapi/string-output-visitor.c')
0 files changed, 0 insertions, 0 deletions