On Tue, Oct 27, 2020 at 02:55:47PM +0100, Philippe Mathieu-Daudé wrote:
> qemu_vfio_pci_map_bar() calls mmap(), and mmap(2) states:
>
> 'offset' must be a multiple of the page size as returned
> by sysconf(_SC_PAGE_SIZE).
>
> In commit f68453237b9 we started to use an offset of 4K which
> broke this contract on Aarch64 arch.
>
> Fix by mapping at offset 0, and and accessing doorbells at offset=4K.
>
> Fixes: f68453237b9 ("block/nvme: Map doorbells pages write-only")
> Reported-by: Eric Auger <eric.au...@redhat.com>
> Signed-off-by: Philippe Mathieu-Daudé <phi...@redhat.com>
> ---
> block/nvme.c | 11 +++++++----
> 1 file changed, 7 insertions(+), 4 deletions(-)Reviewed-by: Stefan Hajnoczi <stefa...@redhat.com>
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