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Message-ID: <f832f118-2049-72f4-1b82-d3e4b5cdebae@gmail.com>
Date: Thu, 8 Dec 2022 22:25:05 +0800
From: Tianyu Lan <ltykernel@...il.com>
To: "Gupta, Pankaj" <pankaj.gupta@....com>, luto@...nel.org,
tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com,
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jiangshan.ljs@...group.com, peterz@...radead.org,
ashish.kalra@....com, srutherford@...gle.com,
akpm@...ux-foundation.org, anshuman.khandual@....com,
pawan.kumar.gupta@...ux.intel.com, adrian.hunter@...el.com,
daniel.sneddon@...ux.intel.com, alexander.shishkin@...ux.intel.com,
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Cc: linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
linux-hyperv@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [RFC PATCH V2 16/18] x86/sev: Initialize #HV doorbell and handle
interrupt requests
On 12/8/2022 7:47 PM, Gupta, Pankaj wrote:
>> diff --git a/arch/x86/include/asm/irqflags.h
>> b/arch/x86/include/asm/irqflags.h
>> index 7793e52d6237..e0730d8bc0ac 100644
>> --- a/arch/x86/include/asm/irqflags.h
>> +++ b/arch/x86/include/asm/irqflags.h
>> @@ -14,6 +14,9 @@
>> /*
>> * Interrupt control:
>> */
>> +#ifdef CONFIG_AMD_MEM_ENCRYPT
>> +void check_hv_pending(struct pt_regs *regs);
>> +#endif
>> /* Declaration required for gcc < 4.9 to prevent
>> -Werror=missing-prototypes */
>> extern inline unsigned long native_save_fl(void);
>> @@ -35,6 +38,19 @@ extern __always_inline unsigned long
>> native_save_fl(void)
>> return flags;
>> }
>> +extern inline void native_restore_fl(unsigned long flags)
>
> Don't know if want to re-introduce this again? as it was removed with
> ab234a260b1f ("x86/pv: Rework arch_local_irq_restore() to not use popf")
Nice catch! This should be here again. Will remove it in the next
version.
Thanks.
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