| commit | f2c0fb93a44972a96f93510311c93ff4c2c6fab5 | |
| author | Iris Johnson <iris@modwiz.com> | |
| Sat, 30 Jan 2021 18:40:17 +0000 (30 18:40 +0000) | ||
| committer | Peter Maydell <peter.maydell@linaro.org> | |
| Tue, 2 Feb 2021 17:00:54 +0000 (2 17:00 +0000) | ||
| tree | 5f935e7f6a0ea80500ab9c0671686a25da9db9ff | treesnapshot (tar.gz zip) |
| parent | 40b4c2ae90e4f864a1015ff748a4af00518ff0c0 | commitdiff |
hw/char/exynos4210_uart: Fix missing call to report ready for input
When the frontend device has no space for a read the fd is removed
from polling to allow time for the guest to read and clear the buffer.
Without the call to qemu_chr_fe_accept_input(), the poll will not be
broken out of when the guest has cleared the buffer causing significant
IO delays that get worse with smaller buffers.
Buglink: https://bugs.launchpad.net/qemu/+bug/1913341
Signed-off-by: Iris Johnson <iris@modwiz.com>
Message-id: 20210130184016.1787097-1-iris@modwiz.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When the frontend device has no space for a read the fd is removed
from polling to allow time for the guest to read and clear the buffer.
Without the call to qemu_chr_fe_accept_input(), the poll will not be
broken out of when the guest has cleared the buffer causing significant
IO delays that get worse with smaller buffers.
Buglink: https://bugs.launchpad.net/qemu/+bug/1913341
Signed-off-by: Iris Johnson <iris@modwiz.com>
Message-id: 20210130184016.1787097-1-iris@modwiz.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| hw/char/exynos4210_uart.c | diffblobblamehistory |