On Tue, Jun 13, 2023 at 10:20:42AM -0700, Elliot Berman wrote: > On Qualcomm platforms, there is a firmware entity which controls access > to physical pages. In order to share memory with another VM, this entity > needs to be informed that the guest VM should have access to the memory. > Why isn't this handled by the system above us? > Reviewed-by: Alex Elder <elder@xxxxxxxxxx> > Co-developed-by: Prakruthi Deepak Heragu <quic_pheragu@xxxxxxxxxxx> > Signed-off-by: Prakruthi Deepak Heragu <quic_pheragu@xxxxxxxxxxx> > Signed-off-by: Elliot Berman <quic_eberman@xxxxxxxxxxx> > --- > drivers/virt/gunyah/Kconfig | 4 ++ > drivers/virt/gunyah/Makefile | 2 + > drivers/virt/gunyah/gunyah_platform_hooks.c | 80 +++++++++++++++++++++ > drivers/virt/gunyah/rsc_mgr.h | 3 + > drivers/virt/gunyah/rsc_mgr_rpc.c | 18 ++++- > include/linux/gunyah_rsc_mgr.h | 17 +++++ > 6 files changed, 122 insertions(+), 2 deletions(-) > create mode 100644 drivers/virt/gunyah/gunyah_platform_hooks.c > > diff --git a/drivers/virt/gunyah/Kconfig b/drivers/virt/gunyah/Kconfig > index 1a737694c333d..de815189dab6c 100644 > --- a/drivers/virt/gunyah/Kconfig > +++ b/drivers/virt/gunyah/Kconfig > @@ -4,6 +4,7 @@ config GUNYAH > tristate "Gunyah Virtualization drivers" > depends on ARM64 > depends on MAILBOX > + select GUNYAH_PLATFORM_HOOKS > help > The Gunyah drivers are the helper interfaces that run in a guest VM > such as basic inter-VM IPC and signaling mechanisms, and higher level > @@ -11,3 +12,6 @@ config GUNYAH > > Say Y/M here to enable the drivers needed to interact in a Gunyah > virtual environment. > + > +config GUNYAH_PLATFORM_HOOKS Automatically selected by GUNYAH and the only platform so far, no need to keep this as a separate Kconfig. > + tristate > diff --git a/drivers/virt/gunyah/Makefile b/drivers/virt/gunyah/Makefile > index bacf78b8fa337..4fbeee521d60a 100644 > --- a/drivers/virt/gunyah/Makefile > +++ b/drivers/virt/gunyah/Makefile > @@ -1,4 +1,6 @@ > # SPDX-License-Identifier: GPL-2.0 > > +obj-$(CONFIG_GUNYAH_PLATFORM_HOOKS) += gunyah_platform_hooks.o > + Why is this added before the core gunyah components? > gunyah-y += rsc_mgr.o rsc_mgr_rpc.o vm_mgr.o vm_mgr_mm.o > obj-$(CONFIG_GUNYAH) += gunyah.o Regards, Bjorn
