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authorOliver Upton <oliver.upton@linux.dev>2024-03-16 00:24:57 +0000
committerLinus Torvalds <torvalds@linux-foundation.org>2024-03-15 17:50:22 -0700
commit82affc97affbdfe83c807ad17147a1220031fd90 (patch)
treee36a50ecc67cc15c16403d35f9843597e1dca3fd /arch/mips/kernel/i8253.c
parent277100b3d5fefacba4f5ff18e2e52a9553eb6e3f (diff)
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Revert "KVM: arm64: Snapshot all non-zero RES0/RES1 sysreg fields for later checking"
This reverts commits 99101dda29e3186b1356b0dc4dbb835c02c71ac9 and b80b701d5a67d07f4df4a21e09cb31f6bc1feeca. Linus reports that the sysreg reserved bit checks in KVM have led to build failures, arising from commit fdd867fe9b32 ("arm64/sysreg: Add register fields for ID_AA64DFR1_EL1") giving meaning to fields that were previously RES0. Of course, this is a genuine issue, since KVM's sysreg emulation depends heavily on the definition of reserved fields. But at this point the build breakage is far more offensive, and the right course of action is to revert and retry later. All of these build-time assertions were on by default before commit 99101dda29e3 ("KVM: arm64: Make build-time check of RES0/RES1 bits optional"), so deliberately revert it all atomically to avoid introducing further breakage of bisection. Link: https://lore.kernel.org/all/CAHk-=whCvkhc8BbFOUf1ddOsgSGgEjwoKv77=HEY1UiVCydGqw@mail.gmail.com/ Acked-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Oliver Upton <oliver.upton@linux.dev> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/mips/kernel/i8253.c')
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