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Shanker Donthineni 68381b2b00 arm64: KVM: Optimize __guest_enter/exit() to save a few instructions

We are doing an unnecessary stack push/pop operation when restoring
the guest registers x0-x18 in __guest_enter(). This patch saves the
two instructions by using x18 as a base register. No need to store
the vcpu context pointer in stack because it is redundant, the same
information is available in tpidr_el2. The function __guest_exit()
calling convention is slightly modified, caller only pushes the regs
x0-x1 to stack instead of regs x0-x3.

Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>

2016-09-08 12:53:00 +02:00

hyp

arm64: KVM: Optimize __guest_enter/exit() to save a few instructions

2016-09-08 12:53:00 +02:00

debug.c

…

emulate.c

…

guest.c

KVM: ARM64: Fix typos

2016-06-14 11:16:27 +02:00

handle_exit.c