Drivers: hv: Move AEOI determination to architecture dependent code (2ddddd0b) · Commits · 戴 / test

Hyper-V on ARM64 doesn't provide a flag for the AEOI recommendation in ms_hyperv.hints, so having the test in architecture independent code doesn't work. Resolve this by moving the check of the flag to an architecture dependent helper function. No functionality is changed. Signed-off-by:

Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20200420164926.24471-1-mikelley@microsoft.com Signed-off-by:

Wei Liu <wei.liu@kernel.org>

arch/x86/include/asm/mshyperv.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -34,6 +34,8 @@ typedef int (*hyperv_fill_flush_list_func)(
		rdmsrl(HV_X64_MSR_SINT0 + int_num, val)
		#define hv_set_synint_state(int_num, val) \
		wrmsrl(HV_X64_MSR_SINT0 + int_num, val)
		#define hv_recommend_using_aeoi() \
		(!(ms_hyperv.hints & HV_DEPRECATING_AEOI_RECOMMENDED))

		#define hv_get_crash_ctl(val) \
		rdmsrl(HV_X64_MSR_CRASH_CTL, val)

drivers/hv/hv.c

+1 −5

Original line number	Diff line number	Diff line
		@@ -184,11 +184,7 @@ void hv_synic_enable_regs(unsigned int cpu)

		shared_sint.vector = HYPERVISOR_CALLBACK_VECTOR;
		shared_sint.masked = false;
		if (ms_hyperv.hints & HV_DEPRECATING_AEOI_RECOMMENDED)
		shared_sint.auto_eoi = false;
		else
		shared_sint.auto_eoi = true;

		shared_sint.auto_eoi = hv_recommend_using_aeoi();
		hv_set_synint_state(VMBUS_MESSAGE_SINT, shared_sint.as_uint64);

		/* Enable the global synic bit */

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