| Message ID | 20240319-console-v2-0-3fd6feef321a@daynix.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | ui/console: Remove console_select() | expand |
Hi Akihiko On Tue, Mar 19, 2024 at 7:09 AM Akihiko Odaki <akihiko.odaki@daynix.com> wrote: > > ui/console has a concept of "active" console; the active console is used > when NULL is set for DisplayListener::con, and console_select() updates > the active console state. However, the global nature of the state cause > odd behaviors, and replacing NULL with the active console also resulted > in extra code. Remove it to solve these problems. > > The active console state is shared, so if there are two displays > referring to the active console, switching the console for one will also > affect the other. All displays that use the active console state, > namely cocoa, curses, and vnc, need to reset some of its state before > switching the console, and such a reset operation cannot be performed if > the console is switched by another display. This can result in stuck > keys, for example. > > While the active console state is shared, displays other than cocoa, > curses, and vnc don't update the state. A chardev-vc inherits the > size of the active console, but it does not make sense for such a > display. > > This series removes the shared "active" console state from ui/console. > curses, cocoa, and vnc will hold the reference to the console currently > shown with DisplayListener::con. This also eliminates the need to > replace NULL with the active console and save code. > > Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> lgtm Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> I am willing to take that for 9.0. Is there any bug already opened about the issues it solves? > --- > Changes in v2: > - Changed to fall back to a text console if there is no graphical > console as previously done. > - Link to v1: https://lore.kernel.org/r/20240318-console-v1-0-f4efbfa71253@daynix.com > > --- > Akihiko Odaki (4): > ui/vc: Do not inherit the size of active console > ui/vnc: Do not use console_select() > ui/cocoa: Do not use console_select() > ui/curses: Do not use console_select() > > include/ui/console.h | 2 +- > include/ui/kbd-state.h | 11 ++++ > ui/console-priv.h | 2 +- > ui/console-vc-stubs.c | 2 +- > ui/console-vc.c | 7 ++- > ui/console.c | 133 ++++++++++++------------------------------------- > ui/curses.c | 48 ++++++++++-------- > ui/kbd-state.c | 6 +++ > ui/vnc.c | 14 ++++-- > ui/cocoa.m | 37 ++++++++++---- > 10 files changed, 118 insertions(+), 144 deletions(-) > --- > base-commit: ba49d760eb04630e7b15f423ebecf6c871b8f77b > change-id: 20240317-console-6744d4ab8ba6 > > Best regards, > -- > Akihiko Odaki <akihiko.odaki@daynix.com> > >
On 2024/03/19 17:29, Marc-André Lureau wrote: > Hi Akihiko > > On Tue, Mar 19, 2024 at 7:09 AM Akihiko Odaki <akihiko.odaki@daynix.com> wrote: >> >> ui/console has a concept of "active" console; the active console is used >> when NULL is set for DisplayListener::con, and console_select() updates >> the active console state. However, the global nature of the state cause >> odd behaviors, and replacing NULL with the active console also resulted >> in extra code. Remove it to solve these problems. >> >> The active console state is shared, so if there are two displays >> referring to the active console, switching the console for one will also >> affect the other. All displays that use the active console state, >> namely cocoa, curses, and vnc, need to reset some of its state before >> switching the console, and such a reset operation cannot be performed if >> the console is switched by another display. This can result in stuck >> keys, for example. >> >> While the active console state is shared, displays other than cocoa, >> curses, and vnc don't update the state. A chardev-vc inherits the >> size of the active console, but it does not make sense for such a >> display. >> >> This series removes the shared "active" console state from ui/console. >> curses, cocoa, and vnc will hold the reference to the console currently >> shown with DisplayListener::con. This also eliminates the need to >> replace NULL with the active console and save code. >> >> Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> > > lgtm > Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> > > I am willing to take that for 9.0. Is there any bug already opened > about the issues it solves? No, I'm not aware of one.
Hi On Wed, Mar 20, 2024 at 7:20 AM Akihiko Odaki <akihiko.odaki@daynix.com> wrote: > > On 2024/03/19 17:29, Marc-André Lureau wrote: > > Hi Akihiko > > > > On Tue, Mar 19, 2024 at 7:09 AM Akihiko Odaki <akihiko.odaki@daynix.com> wrote: > >> > >> ui/console has a concept of "active" console; the active console is used > >> when NULL is set for DisplayListener::con, and console_select() updates > >> the active console state. However, the global nature of the state cause > >> odd behaviors, and replacing NULL with the active console also resulted > >> in extra code. Remove it to solve these problems. > >> > >> The active console state is shared, so if there are two displays > >> referring to the active console, switching the console for one will also > >> affect the other. All displays that use the active console state, > >> namely cocoa, curses, and vnc, need to reset some of its state before > >> switching the console, and such a reset operation cannot be performed if > >> the console is switched by another display. This can result in stuck > >> keys, for example. > >> > >> While the active console state is shared, displays other than cocoa, > >> curses, and vnc don't update the state. A chardev-vc inherits the > >> size of the active console, but it does not make sense for such a > >> display. > >> > >> This series removes the shared "active" console state from ui/console. > >> curses, cocoa, and vnc will hold the reference to the console currently > >> shown with DisplayListener::con. This also eliminates the need to > >> replace NULL with the active console and save code. > >> > >> Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> > > > > lgtm > > Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> > > > > I am willing to take that for 9.0. Is there any bug already opened > > about the issues it solves? > > No, I'm not aware of one. The first patch "Do not inherit the size of active console" is not directly related and may not be suitable for merge during freeze. Are you ok with merging the rest for 9.0 or delay it for 9.1?
On 2024/03/20 16:00, Marc-André Lureau wrote: > Hi > > On Wed, Mar 20, 2024 at 7:20 AM Akihiko Odaki <akihiko.odaki@daynix.com> wrote: >> >> On 2024/03/19 17:29, Marc-André Lureau wrote: >>> Hi Akihiko >>> >>> On Tue, Mar 19, 2024 at 7:09 AM Akihiko Odaki <akihiko.odaki@daynix.com> wrote: >>>> >>>> ui/console has a concept of "active" console; the active console is used >>>> when NULL is set for DisplayListener::con, and console_select() updates >>>> the active console state. However, the global nature of the state cause >>>> odd behaviors, and replacing NULL with the active console also resulted >>>> in extra code. Remove it to solve these problems. >>>> >>>> The active console state is shared, so if there are two displays >>>> referring to the active console, switching the console for one will also >>>> affect the other. All displays that use the active console state, >>>> namely cocoa, curses, and vnc, need to reset some of its state before >>>> switching the console, and such a reset operation cannot be performed if >>>> the console is switched by another display. This can result in stuck >>>> keys, for example. >>>> >>>> While the active console state is shared, displays other than cocoa, >>>> curses, and vnc don't update the state. A chardev-vc inherits the >>>> size of the active console, but it does not make sense for such a >>>> display. >>>> >>>> This series removes the shared "active" console state from ui/console. >>>> curses, cocoa, and vnc will hold the reference to the console currently >>>> shown with DisplayListener::con. This also eliminates the need to >>>> replace NULL with the active console and save code. >>>> >>>> Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> >>> >>> lgtm >>> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> >>> >>> I am willing to take that for 9.0. Is there any bug already opened >>> about the issues it solves? >> >> No, I'm not aware of one. > > The first patch "Do not inherit the size of active console" is not > directly related and may not be suitable for merge during freeze. Are > you ok with merging the rest for 9.0 or delay it for 9.1? The first patch needs to be applied before the others. It removes qemu_console_get_width()/qemu_console_get_height() calls with NULL as QemuConsole *con argument, which is intended to be replaced with the active console. The calls will make no sense after the other patches are applied since the concept of the active console will be gone.
ui/console has a concept of "active" console; the active console is used when NULL is set for DisplayListener::con, and console_select() updates the active console state. However, the global nature of the state cause odd behaviors, and replacing NULL with the active console also resulted in extra code. Remove it to solve these problems. The active console state is shared, so if there are two displays referring to the active console, switching the console for one will also affect the other. All displays that use the active console state, namely cocoa, curses, and vnc, need to reset some of its state before switching the console, and such a reset operation cannot be performed if the console is switched by another display. This can result in stuck keys, for example. While the active console state is shared, displays other than cocoa, curses, and vnc don't update the state. A chardev-vc inherits the size of the active console, but it does not make sense for such a display. This series removes the shared "active" console state from ui/console. curses, cocoa, and vnc will hold the reference to the console currently shown with DisplayListener::con. This also eliminates the need to replace NULL with the active console and save code. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> --- Changes in v2: - Changed to fall back to a text console if there is no graphical console as previously done. - Link to v1: https://lore.kernel.org/r/20240318-console-v1-0-f4efbfa71253@daynix.com --- Akihiko Odaki (4): ui/vc: Do not inherit the size of active console ui/vnc: Do not use console_select() ui/cocoa: Do not use console_select() ui/curses: Do not use console_select() include/ui/console.h | 2 +- include/ui/kbd-state.h | 11 ++++ ui/console-priv.h | 2 +- ui/console-vc-stubs.c | 2 +- ui/console-vc.c | 7 ++- ui/console.c | 133 ++++++++++++------------------------------------- ui/curses.c | 48 ++++++++++-------- ui/kbd-state.c | 6 +++ ui/vnc.c | 14 ++++-- ui/cocoa.m | 37 ++++++++++---- 10 files changed, 118 insertions(+), 144 deletions(-) --- base-commit: ba49d760eb04630e7b15f423ebecf6c871b8f77b change-id: 20240317-console-6744d4ab8ba6 Best regards,