Commit af37bc75 authored by Nuno Das Neves's avatar Nuno Das Neves Committed by Wei Liu
Browse files

hyperv: Introduce hv_recommend_using_aeoi() 



Factor out the check for enabling auto eoi, to be reused in root
partition code.

No functional changes.

Signed-off-by: default avatarNuno Das Neves <nunodasneves@linux.microsoft.com>
Reviewed-by: default avatarStanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Reviewed-by: default avatarEaswar Hariharan <eahariha@linux.microsoft.com>
Reviewed-by: default avatarMichael Kelley <mhklinux@outlook.com>
Reviewed-by: default avatarTianyu Lan <tiala@microsoft.com>
Link: https://lore.kernel.org/r/1741980536-3865-5-git-send-email-nunodasneves@linux.microsoft.com


Signed-off-by: default avatarWei Liu <wei.liu@kernel.org>
Message-ID: <1741980536-3865-5-git-send-email-nunodasneves@linux.microsoft.com>
parent feba84c2

drivers/hv/hv.c

+1 −11
Original line number Diff line number Diff line
@@ -313,17 +313,7 @@ void hv_synic_enable_regs(unsigned int cpu) 


	shared_sint.vector = vmbus_interrupt;

	shared_sint.masked = false;



	/*

	 * On architectures where Hyper-V doesn't support AEOI (e.g., ARM64),

	 * it doesn't provide a recommendation flag and AEOI must be disabled.

	 */

#ifdef HV_DEPRECATING_AEOI_RECOMMENDED

	shared_sint.auto_eoi =

			!(ms_hyperv.hints & HV_DEPRECATING_AEOI_RECOMMENDED);

#else

	shared_sint.auto_eoi = 0;

#endif

	shared_sint.auto_eoi = hv_recommend_using_aeoi();

	hv_set_msr(HV_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);



	/* Enable the global synic bit */

include/asm-generic/mshyperv.h

+13 −0
Original line number Diff line number Diff line
@@ -77,6 +77,19 @@ u64 hv_do_fast_hypercall16(u16 control, u64 input1, u64 input2); 
bool hv_isolation_type_snp(void);

bool hv_isolation_type_tdx(void);



/*

 * On architectures where Hyper-V doesn't support AEOI (e.g., ARM64),

 * it doesn't provide a recommendation flag and AEOI must be disabled.

 */

static inline bool hv_recommend_using_aeoi(void)

{

#ifdef HV_DEPRECATING_AEOI_RECOMMENDED

	return !(ms_hyperv.hints & HV_DEPRECATING_AEOI_RECOMMENDED);

#else

	return false;

#endif

}



static inline struct hv_proximity_domain_info hv_numa_node_to_pxm_info(int node)

{

	struct hv_proximity_domain_info pxm_info = {};