From: Thiago Jung Bauermann <bauerman@linux.ibm.com>
To: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: Anshuman Khandual <anshuman.linux@gmail.com>,
Mike Anderson <andmike@linux.ibm.com>,
Ram Pai <linuxram@us.ibm.com>,
linux-kernel@vger.kernel.org,
Claudio Carvalho <cclaudio@linux.ibm.com>,
Paul Mackerras <paulus@samba.org>,
linuxppc-dev@lists.ozlabs.org, Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH v2 03/13] powerpc/prom_init: Add the ESM call to prom_init
Date: Thu, 18 Jul 2019 21:48:34 -0300 [thread overview]
Message-ID: <874l3i4zod.fsf@morokweng.localdomain> (raw)
In-Reply-To: <f4cba627-8c40-ce95-0ede-b01edf3546dc@ozlabs.ru>
Alexey Kardashevskiy <aik@ozlabs.ru> writes:
> On 19/07/2019 07:28, Thiago Jung Bauermann wrote:
>>
>> Hello Segher,
>>
>> Thanks for your review and suggestions!
>>
>> Segher Boessenkool <segher@kernel.crashing.org> writes:
>>
>>> (Sorry to hijack your reply).
>>>
>>> On Thu, Jul 18, 2019 at 06:11:48PM +1000, Alexey Kardashevskiy wrote:
>>>> On 13/07/2019 16:00, Thiago Jung Bauermann wrote:
>>>>> From: Ram Pai <linuxram@us.ibm.com>
>>>>> +static int enter_secure_mode(unsigned long kbase, unsigned long fdt)
>>>>> +{
>>>>> + register uint64_t func asm("r3") = UV_ESM;
>>>>> + register uint64_t arg1 asm("r4") = (uint64_t)kbase;
>>>>> + register uint64_t arg2 asm("r5") = (uint64_t)fdt;
>>>>
>>>> What does UV do with kbase and fdt precisely? Few words in the commit
>>>> log will do.
>
>
> What about this one? :)
Sorry, I don't have an elaborate answer yet. The non-elaborate answer is
that the ultravisor uses the kbase and fdt as part of integrity checking
of the secure guest.
--
Thiago Jung Bauermann
IBM Linux Technology Center
next prev parent reply other threads:[~2019-07-19 0:50 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-13 6:00 [PATCH v2 00/13] Secure Virtual Machine Enablement Thiago Jung Bauermann
2019-07-13 6:00 ` [PATCH v2 01/13] powerpc/pseries: Introduce option to build secure virtual machines Thiago Jung Bauermann
2019-07-13 6:00 ` [RFC PATCH v2 02/13] powerpc: Add support for adding an ESM blob to the zImage wrapper Thiago Jung Bauermann
2019-07-13 6:00 ` [PATCH v2 03/13] powerpc/prom_init: Add the ESM call to prom_init Thiago Jung Bauermann
2019-07-18 8:11 ` Alexey Kardashevskiy
2019-07-18 19:58 ` Segher Boessenkool
2019-07-18 21:28 ` Thiago Jung Bauermann
2019-07-19 0:09 ` Alexey Kardashevskiy
2019-07-19 0:48 ` Thiago Jung Bauermann [this message]
2019-07-13 6:00 ` [PATCH v2 04/13] powerpc/pseries/svm: Add helpers for UV_SHARE_PAGE and UV_UNSHARE_PAGE Thiago Jung Bauermann
2019-07-18 8:13 ` Alexey Kardashevskiy
2019-07-18 20:12 ` Thiago Jung Bauermann
2019-07-13 6:00 ` [PATCH v2 05/13] powerpc/pseries: Add and use LPPACA_SIZE constant Thiago Jung Bauermann
2019-07-13 6:00 ` [PATCH v2 06/13] powerpc/pseries/svm: Use shared memory for LPPACA structures Thiago Jung Bauermann
2019-07-13 6:00 ` [PATCH v2 07/13] powerpc/pseries/svm: Use shared memory for Debug Trace Log (DTL) Thiago Jung Bauermann
2019-07-13 6:00 ` [PATCH v2 08/13] powerpc/pseries/svm: Unshare all pages before kexecing a new kernel Thiago Jung Bauermann
2019-07-13 6:00 ` [PATCH v2 09/13] powerpc/pseries/svm: Export guest SVM status to user space via sysfs Thiago Jung Bauermann
2019-07-13 6:00 ` [PATCH v2 10/13] powerpc/pseries/svm: Disable doorbells in SVM guests Thiago Jung Bauermann
2019-07-13 6:00 ` [PATCH v2 11/13] powerpc/pseries/iommu: Don't use dma_iommu_ops on secure guests Thiago Jung Bauermann
2019-07-13 6:00 ` [PATCH v2 12/13] powerpc/pseries/svm: Force SWIOTLB for " Thiago Jung Bauermann
2019-07-13 6:00 ` [PATCH v2 13/13] powerpc/configs: Enable secure guest support in pseries and ppc64 defconfigs Thiago Jung Bauermann
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