1da4e2f4fb
It is possible, through a narrow race condition, for a VCPU to exit the guest with a H_CEDE hypercall while it has a doorbell interrupt pending. In this case, the H_CEDE should return immediately, but in fact it puts the VCPU to sleep until some other interrupt becomes pending or a prod is received (via another VCPU doing H_PROD). This fixes it by checking the DPDES (Directed Privileged Doorbell Exception Status) bit for the thread along with the other interrupt pending bits. Signed-off-by: Paul Mackerras <paulus@ozlabs.org> |
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| arch | ||
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| certs | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
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| COPYING | ||
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| Kbuild | ||
| Kconfig | ||
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| Makefile | ||
| README | ||
README
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.