From: Borislav Petkov <bp@alien8.de>
To: shuo.a.liu@intel.com
Cc: linux-kernel@vger.kernel.org, x86@kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"H . Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Sean Christopherson <sean.j.christopherson@intel.com>,
Yu Wang <yu1.wang@intel.com>,
Reinette Chatre <reinette.chatre@intel.com>,
Yakui Zhao <yakui.zhao@intel.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Dave Hansen <dave.hansen@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
Fengwei Yin <fengwei.yin@intel.com>,
Zhi Wang <zhi.a.wang@intel.com>,
Zhenyu Wang <zhenyuw@linux.intel.com>,
Arvind Sankar <nivedita@alum.mit.edu>,
Peter Zijlstra <peterz@infradead.org>,
Segher Boessenkool <segher@kernel.crashing.org>
Subject: Re: [PATCH v6 04/18] x86/acrn: Introduce hypercall interfaces
Date: Wed, 30 Dec 2020 18:33:05 +0100 [thread overview]
Message-ID: <20201230173305.GF22022@zn.tnic> (raw)
In-Reply-To: <20201201093853.12070-5-shuo.a.liu@intel.com>
On Tue, Dec 01, 2020 at 05:38:39PM +0800, shuo.a.liu@intel.com wrote:
> From: Shuo Liu <shuo.a.liu@intel.com>
>
> The Service VM communicates with the hypervisor via conventional
> hypercalls. VMCALL instruction is used to make the hypercalls.
>
> ACRN hypercall ABI:
> * Hypercall number is in R8 register.
> * Up to 2 parameters are in RDI and RSI registers.
> * Return value is in RAX register.
>
> Introduce the ACRN hypercall interfaces. Because GCC doesn't support R8
> register as direct register constraints, use supported constraint as
> input with a explicit MOV to R8 in beginning of asm.
>
> Originally-by: Yakui Zhao <yakui.zhao@intel.com>
> Signed-off-by: Shuo Liu <shuo.a.liu@intel.com>
> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
> Cc: Dave Hansen <dave.hansen@intel.com>
> Cc: Sean Christopherson <sean.j.christopherson@intel.com>
> Cc: Dan Williams <dan.j.williams@intel.com>
> Cc: Fengwei Yin <fengwei.yin@intel.com>
> Cc: Zhi Wang <zhi.a.wang@intel.com>
> Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
> Cc: Yu Wang <yu1.wang@intel.com>
> Cc: Reinette Chatre <reinette.chatre@intel.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: Borislav Petkov <bp@alien8.de>
> Cc: Arvind Sankar <nivedita@alum.mit.edu>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Nick Desaulniers <ndesaulniers@google.com>
> Cc: Segher Boessenkool <segher@kernel.crashing.org>
> ---
> arch/x86/include/asm/acrn.h | 54 +++++++++++++++++++++++++++++++++++++
> 1 file changed, 54 insertions(+)
The x86 bits in patches 2-4 look ok now, thanks!
Acked-by: Borislav Petkov <bp@suse.de>
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2020-12-30 17:34 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-01 9:38 [PATCH v6 00/18] HSM driver for ACRN hypervisor shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 01/18] docs: acrn: Introduce ACRN shuo.a.liu
2020-12-08 11:52 ` Borislav Petkov
2020-12-09 1:36 ` Shuo A Liu
2020-12-01 9:38 ` [PATCH v6 02/18] x86/acrn: Introduce acrn_{setup, remove}_intr_handler() shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 03/18] x86/acrn: Introduce acrn_cpuid_base() and hypervisor feature bits shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 04/18] x86/acrn: Introduce hypercall interfaces shuo.a.liu
2020-12-30 17:33 ` Borislav Petkov [this message]
2021-01-06 7:52 ` Shuo A Liu
2020-12-01 9:38 ` [PATCH v6 05/18] virt: acrn: Introduce ACRN HSM basic driver shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 06/18] virt: acrn: Introduce VM management interfaces shuo.a.liu
2020-12-01 10:09 ` Greg Kroah-Hartman
2020-12-02 2:14 ` Shuo A Liu
2020-12-15 9:52 ` Shuo A Liu
2020-12-15 10:00 ` Greg Kroah-Hartman
2020-12-15 10:02 ` Shuo A Liu
2021-01-05 14:03 ` Greg Kroah-Hartman
2021-01-06 7:56 ` Shuo A Liu
2020-12-01 9:38 ` [PATCH v6 07/18] virt: acrn: Introduce an ioctl to set vCPU registers state shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 08/18] virt: acrn: Introduce EPT mapping management shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 09/18] virt: acrn: Introduce I/O request management shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 10/18] virt: acrn: Introduce PCI configuration space PIO accesses combiner shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 11/18] virt: acrn: Introduce interfaces for PCI device passthrough shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 12/18] virt: acrn: Introduce interrupt injection interfaces shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 13/18] virt: acrn: Introduce interfaces to query C-states and P-states allowed by hypervisor shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 14/18] virt: acrn: Introduce I/O ranges operation interfaces shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 15/18] virt: acrn: Introduce ioeventfd shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 16/18] virt: acrn: Introduce irqfd shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 17/18] virt: acrn: Introduce an interface for Service VM to control vCPU shuo.a.liu
2020-12-01 9:38 ` [PATCH v6 18/18] sample/acrn: Introduce a sample of HSM ioctl interface usage shuo.a.liu
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