Add helper macro for computing the PA of a kernel symbol in nVHE hyp code. This will be useful for computing the PA of a PSCI CPU_ON entry point.
Signed-off-by: David Brazdil <[email protected]> --- arch/arm64/kvm/hyp/nvhe/psci.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm64/kvm/hyp/nvhe/psci.c b/arch/arm64/kvm/hyp/nvhe/psci.c index b0b5df590ba5..7510b9e174e9 100644 --- a/arch/arm64/kvm/hyp/nvhe/psci.c +++ b/arch/arm64/kvm/hyp/nvhe/psci.c @@ -20,6 +20,16 @@ s64 hyp_physvirt_offset; #define __hyp_pa(x) ((phys_addr_t)((x)) + hyp_physvirt_offset) +#define __hyp_pa_symbol(sym) \ + ({ \ + extern char sym[]; \ + unsigned long kern_va; \ + \ + asm volatile("ldr %0, =%1" : "=r" (kern_va) \ + : "S" (sym)); \ + kern_va - kimage_voffset; \ + }) + static u64 get_psci_func_id(struct kvm_cpu_context *host_ctxt) { return host_ctxt->regs.regs[0]; -- 2.29.2.222.g5d2a92d10f8-goog
