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hyperv: Introduce hv_recommend_using_aeoi()

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

No functional changes.

Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Reviewed-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Reviewed-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Tianyu Lan <tiala@microsoft.com>
Link: https://lore.kernel.org/r/1741980536-3865-5-git-send-email-nunodasneves@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <1741980536-3865-5-git-send-email-nunodasneves@linux.microsoft.com>
This commit is contained in:
Nuno Das Neves
2025-03-14 12:28:50 -07:00
committed by Wei Liu
parent feba84c2c9
commit af37bc759f
2 changed files with 14 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/hv/hv.c
View File

@@ -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 */

13
include/asm-generic/mshyperv.h
View File

@@ -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 = {};