APPLIED: [PATCH 0/5][jammy/linux-azure] SGX fixes for 5.15 Azure tuned kernel

[Tim Gardner]

On 6/22/22 08:24, Tim Gardner wrote:
> BugLink: https://bugs.launchpad.net/bugs/1979541
> 
> SRU Justification
> 
> [Impact]
> 
> https://lore.kernel.org/linux-sgx/dd7c1402-eeb9-cea5-25c6-ab19e8031991@intel.com/T/ = This
> fix introduced a bug and fixed and reverted by series added to 5.19
> (https://lore.kernel.org/linux-sgx/cover.1652389823.git.reinette.chatre@intel.com/)
> 
> Backport several SGX fixes.
> 
> x86/sgx: Ensure no data in PCMD page after truncate
> x86/sgx: Fix race between reclaimer and page fault handler
> x86/sgx: Obtain backing storage page with enclave mutex held
> x86/sgx: Mark PCMD page as dirty when modifying contents
> x86/sgx: Disconnect backing page references from dirty status
> 
> [Test Plan]
> 
> Microsoft tested, "Update from engineer - I was unable to reproduce the softlock issue after the patches were installed"
> 
> [Where things could go wrong]
> 
> These patches could cause a different soft lockup.
> 
> [Other Info]
> 
> SF: #00338537
> 
Applied to jammy/linux-azure:master-next. Thanks.

-rtg

-- 
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Tim Gardner
Canonical, Inc