kernel/linux.git - Linux kernel stable tree (mirror)

Age	Commit message (Collapse)	Author	Files	Lines
2022-06-29	KVM: PPC: Book3S HV: Expose timing functions to module code	Fabiano Rosas	1	-0/+10
	The next patch adds new timing points to the P9 entry path, some of which are in the module code, so we need to export the timing functions. Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220525130554.2614394-5-farosas@linux.ibm.com
2021-11-24	KVM: PPC: Book3S HV P9: Use Linux SPR save/restore to manage some host SPRs	Nicholas Piggin	1	-3/+0
	Linux implements SPR save/restore including storage space for registers in the task struct for process context switching. Make use of this similarly to the way we make use of the context switching fp/vec save restore. This improves code reuse, allows some stack space to be saved, and helps with avoiding VRSAVE updates if they are not required. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20211123095231.1036501-39-npiggin@gmail.com
2021-11-24	KVM: PPC: Book3S HV P9: Move host OS save/restore functions to built-in	Nicholas Piggin	1	-0/+45
	Move the P9 guest/host register switching functions to the built-in P9 entry code, and export it for nested to use as well. This allows more flexibility in scheduling these supervisor privileged SPR accesses with the HV privileged and PR SPR accesses in the low level entry code. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20211123095231.1036501-30-npiggin@gmail.com