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010c5bee66
commit b96b0c5de685df82019e16826a282d53d86d112c upstream The nVHE KVM hyp drains and disables the SPE buffer, before entering the guest, as the EL1&0 translation regime is going to be loaded with that of the guest. But this operation is performed way too late, because : - The owning translation regime of the SPE buffer is transferred to EL2. (MDCR_EL2_E2PB == 0) - The guest Stage1 is loaded. Thus the flush could use the host EL1 virtual address, but use the EL2 translations instead of host EL1, for writing out any cached data. Fix this by moving the SPE buffer handling early enough. The restore path is doing the right thing. Cc: stable@vger.kernel.org # v5.4- Cc: Christoffer Dall <christoffer.dall@arm.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Alexandru Elisei <alexandru.elisei@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Acked-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.