From: Matthew Wilcox <willy@infradead.org>
To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: x86@kernel.org, linux-sgx@vger.kernel.org,
linux-kernel@vger.kernel.org,
Sean Christopherson <sean.j.christopherson@intel.com>,
linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
Jethro Beekman <jethro@fortanix.com>,
andriy.shevchenko@linux.intel.com, asapek@google.com,
bp@alien8.de, cedric.xing@intel.com, chenalexchen@google.com,
conradparker@google.com, cyhanish@google.com,
dave.hansen@intel.com, haitao.huang@intel.com,
josh@joshtriplett.org, kai.huang@intel.com, kai.svahn@intel.com,
kmoy@google.com, ludloff@google.com, luto@kernel.org,
nhorman@redhat.com, npmccallum@redhat.com, puiterwijk@redhat.com,
rientjes@google.com, tglx@linutronix.de, yaozhangx@google.com
Subject: Re: [PATCH v34 10/24] mm: Add vm_ops->mprotect()
Date: Tue, 7 Jul 2020 04:14:24 +0100 [thread overview]
Message-ID: <20200707031424.GD25523@casper.infradead.org> (raw)
In-Reply-To: <20200707030204.126021-11-jarkko.sakkinen@linux.intel.com>
On Tue, Jul 07, 2020 at 06:01:50AM +0300, Jarkko Sakkinen wrote:
> +++ b/mm/mprotect.c
> @@ -603,13 +603,20 @@ static int do_mprotect_pkey(unsigned long start, size_t len,
> goto out;
> }
>
> + tmp = vma->vm_end;
> + if (tmp > end)
> + tmp = end;
> +
> error = security_file_mprotect(vma, reqprot, prot);
> if (error)
> goto out;
>
> - tmp = vma->vm_end;
> - if (tmp > end)
> - tmp = end;
You don't need to move this any more, right?
> + if (vma->vm_ops && vma->vm_ops->mprotect) {
> + error = vma->vm_ops->mprotect(vma, nstart, tmp, prot);
> + if (error)
> + goto out;
> + }
> +
> error = mprotect_fixup(vma, &prev, nstart, tmp, newflags);
> if (error)
> goto out;
> --
> 2.25.1
>
next prev parent reply other threads:[~2020-07-07 3:14 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-07 3:01 [PATCH v34 00/24] Intel SGX foundations Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 01/24] x86/cpufeatures: x86/msr: Add Intel SGX hardware bits Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 02/24] x86/cpufeatures: x86/msr: Add Intel SGX Launch Control " Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 03/24] x86/mm: x86/sgx: Signal SIGSEGV with PF_SGX Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 04/24] x86/sgx: Add SGX microarchitectural data structures Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 05/24] x86/sgx: Add wrappers for ENCLS leaf functions Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 06/24] x86/cpu/intel: Detect SGX support Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 07/24] x86/cpu/intel: Add nosgx kernel parameter Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 08/24] x86/sgx: Initialize metadata for Enclave Page Cache (EPC) sections Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 09/24] x86/sgx: Add __sgx_alloc_epc_page() and sgx_free_epc_page() Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 10/24] mm: Add vm_ops->mprotect() Jarkko Sakkinen
2020-07-07 3:14 ` Matthew Wilcox [this message]
2020-07-07 3:22 ` Sean Christopherson
2020-07-07 3:24 ` Matthew Wilcox
2020-07-07 4:01 ` Jarkko Sakkinen
2020-07-07 4:10 ` Matthew Wilcox
2020-07-08 14:33 ` Jarkko Sakkinen
2020-07-08 14:37 ` Matthew Wilcox
2020-07-08 16:10 ` Jarkko Sakkinen
2020-07-08 22:56 ` Jarkko Sakkinen
2020-07-07 4:03 ` Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 11/24] x86/sgx: Add SGX enclave driver Jarkko Sakkinen
2020-07-07 3:36 ` Matthew Wilcox
2020-07-07 4:11 ` Jarkko Sakkinen
2020-07-07 4:29 ` Sean Christopherson
2020-07-07 4:39 ` Matthew Wilcox
2020-07-07 4:46 ` Sean Christopherson
2020-07-07 3:01 ` [PATCH v34 12/24] x86/sgx: Add SGX_IOC_ENCLAVE_CREATE Jarkko Sakkinen
2020-07-07 3:29 ` Sean Christopherson
2020-07-07 4:04 ` Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 13/24] x86/sgx: Add SGX_IOC_ENCLAVE_ADD_PAGES Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 14/24] x86/sgx: Add SGX_IOC_ENCLAVE_INIT Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 15/24] x86/sgx: Allow a limited use of ATTRIBUTE.PROVISIONKEY for attestation Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 16/24] x86/sgx: Add a page reclaimer Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 17/24] x86/sgx: ptrace() support for the SGX driver Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 18/24] x86/vdso: Add support for exception fixup in vDSO functions Jarkko Sakkinen
2020-07-07 3:01 ` [PATCH v34 19/24] x86/fault: Add helper function to sanitize error code Jarkko Sakkinen
2020-07-07 3:02 ` [PATCH v34 20/24] x86/traps: Attempt to fixup exceptions in vDSO before signaling Jarkko Sakkinen
2020-07-07 3:02 ` [PATCH v34 21/24] x86/vdso: Implement a vDSO for Intel SGX enclave call Jarkko Sakkinen
2020-07-07 3:02 ` [PATCH v34 22/24] selftests/x86: Add a selftest for SGX Jarkko Sakkinen
2020-07-07 3:02 ` [PATCH v34 23/24] docs: x86/sgx: Document SGX micro architecture and kernel internals Jarkko Sakkinen
2020-07-07 3:02 ` [PATCH v34 24/24] x86/sgx: Update MAINTAINERS Jarkko Sakkinen
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