From: Matt Fleming <matt@codeblueprint.co.uk> To: Ingo Molnar <mingo@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>, Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, Ard Biesheuvel <ard.biesheuvel@linaro.org>, Andy Lutomirski <luto@amacapital.net>, Borislav Petkov <bp@alien8.de>, Mark Rutland <mark.rutland@arm.com> Subject: [GIT PULL] EFI urgent fixes Date: Wed, 18 Feb 2015 11:55:43 +0000 [thread overview] Message-ID: <20150218115543.GA5648@codeblueprint.co.uk> (raw) Folks, please pull the following fixes. The revert addresses a regression that Ard hit when booting Qemu and Xen, and the other patch ensures that we don't triple fault when receiving an NMI or MCE during an EFI mixed mode call, which may happen, for instance, when running perf. The pull is against tip/x86/efi because tip/x86/urgent doesn't contain commit d1a8d66b9177 ("efi/libstub: Call get_memory_map() to obtain map and desc sizes") needed for the revert. If you'd prefer for me to resend this after the merge window closes, just let me know. The following changes since commit 3c01b74e818a7a3b2ee9b0d584cca0bc154a031c: Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into x86/efi (2015-01-29 19:16:40 +0100) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi.git tags/efi-urgent for you to fetch changes up to 43a9f69692b232d1c64c913a27507eb14a1c47fd: Revert "efi/libstub: Call get_memory_map() to obtain map and desc sizes" (2015-02-18 11:38:13 +0000) ---------------------------------------------------------------- * Leave a valid 64-bit IDT installed during runtime EFI mixed mode calls to avoid triple faults if an NMI/MCE is received. * Revert Ard's change to the libstub get_memory_map() that went into the v3.20 merge window because it causes boot regressions on Qemu and Xen. ---------------------------------------------------------------- Matt Fleming (2): x86/efi: Avoid triple faults during EFI mixed mode calls Revert "efi/libstub: Call get_memory_map() to obtain map and desc sizes" arch/x86/boot/compressed/Makefile | 1 + arch/x86/boot/compressed/efi_stub_64.S | 25 ---- arch/x86/boot/compressed/efi_thunk_64.S | 196 +++++++++++++++++++++++++ arch/x86/platform/efi/efi_stub_64.S | 161 -------------------- arch/x86/platform/efi/efi_thunk_64.S | 121 ++++++++++++--- drivers/firmware/efi/libstub/efi-stub-helper.c | 16 +- 6 files changed, 307 insertions(+), 213 deletions(-) create mode 100644 arch/x86/boot/compressed/efi_thunk_64.S -- Matt Fleming, Intel Open Source Technology Center
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From: Matt Fleming <matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org> To: Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, "H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>, Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org> Cc: linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Ard Biesheuvel <ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>, Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>, Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org> Subject: [GIT PULL] EFI urgent fixes Date: Wed, 18 Feb 2015 11:55:43 +0000 [thread overview] Message-ID: <20150218115543.GA5648@codeblueprint.co.uk> (raw) Folks, please pull the following fixes. The revert addresses a regression that Ard hit when booting Qemu and Xen, and the other patch ensures that we don't triple fault when receiving an NMI or MCE during an EFI mixed mode call, which may happen, for instance, when running perf. The pull is against tip/x86/efi because tip/x86/urgent doesn't contain commit d1a8d66b9177 ("efi/libstub: Call get_memory_map() to obtain map and desc sizes") needed for the revert. If you'd prefer for me to resend this after the merge window closes, just let me know. The following changes since commit 3c01b74e818a7a3b2ee9b0d584cca0bc154a031c: Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into x86/efi (2015-01-29 19:16:40 +0100) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi.git tags/efi-urgent for you to fetch changes up to 43a9f69692b232d1c64c913a27507eb14a1c47fd: Revert "efi/libstub: Call get_memory_map() to obtain map and desc sizes" (2015-02-18 11:38:13 +0000) ---------------------------------------------------------------- * Leave a valid 64-bit IDT installed during runtime EFI mixed mode calls to avoid triple faults if an NMI/MCE is received. * Revert Ard's change to the libstub get_memory_map() that went into the v3.20 merge window because it causes boot regressions on Qemu and Xen. ---------------------------------------------------------------- Matt Fleming (2): x86/efi: Avoid triple faults during EFI mixed mode calls Revert "efi/libstub: Call get_memory_map() to obtain map and desc sizes" arch/x86/boot/compressed/Makefile | 1 + arch/x86/boot/compressed/efi_stub_64.S | 25 ---- arch/x86/boot/compressed/efi_thunk_64.S | 196 +++++++++++++++++++++++++ arch/x86/platform/efi/efi_stub_64.S | 161 -------------------- arch/x86/platform/efi/efi_thunk_64.S | 121 ++++++++++++--- drivers/firmware/efi/libstub/efi-stub-helper.c | 16 +- 6 files changed, 307 insertions(+), 213 deletions(-) create mode 100644 arch/x86/boot/compressed/efi_thunk_64.S -- Matt Fleming, Intel Open Source Technology Center
next reply other threads:[~2015-02-18 11:55 UTC|newest] Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-02-18 11:55 Matt Fleming [this message] 2015-02-18 11:55 ` [GIT PULL] EFI urgent fixes Matt Fleming 2015-02-18 13:43 ` Ingo Molnar 2015-02-18 13:43 ` Ingo Molnar 2015-02-18 16:36 ` Ard Biesheuvel 2015-02-18 16:36 ` Ard Biesheuvel 2015-02-18 16:57 ` Ingo Molnar 2015-02-18 16:57 ` Ingo Molnar -- strict thread matches above, loose matches on Subject: below -- 2015-07-30 21:06 Matt Fleming 2015-07-31 7:56 ` Ingo Molnar 2015-07-31 7:56 ` Ingo Molnar 2015-05-05 16:27 Matt Fleming 2015-05-06 6:31 ` Ingo Molnar 2015-05-06 6:31 ` Ingo Molnar 2015-03-02 12:51 Matt Fleming 2015-03-02 13:24 ` Ingo Molnar 2015-03-02 13:24 ` Ingo Molnar 2015-03-02 13:35 ` Matt Fleming 2014-09-25 7:31 Matt Fleming 2014-09-25 14:41 ` Ingo Molnar 2014-09-25 14:41 ` Ingo Molnar 2014-09-25 14:44 ` Matt Fleming 2014-09-25 14:44 ` Matt Fleming 2014-09-26 11:27 ` Paul Bolle 2014-09-26 11:27 ` Paul Bolle 2014-09-26 11:35 ` Ingo Molnar 2014-09-26 11:35 ` Ingo Molnar 2014-09-26 12:24 ` Matt Fleming 2014-09-26 12:24 ` Matt Fleming 2014-09-27 5:49 ` Ingo Molnar 2014-09-27 5:49 ` Ingo Molnar 2014-09-26 11:44 ` Matt Fleming 2014-09-26 11:44 ` Matt Fleming 2014-09-26 11:59 ` Paul Bolle 2014-09-26 11:59 ` Paul Bolle 2014-09-26 12:34 ` Matt Fleming 2014-09-26 12:34 ` Matt Fleming 2014-09-26 12:55 ` Paul Bolle 2014-09-27 8:04 ` Valentin Rothberg 2014-09-27 8:04 ` Valentin Rothberg 2014-09-27 9:59 ` Paul Bolle 2014-09-27 9:59 ` Paul Bolle 2014-09-08 21:55 Matt Fleming 2014-09-08 21:55 ` Matt Fleming 2014-09-09 5:07 ` Ingo Molnar 2014-09-09 5:07 ` Ingo Molnar 2014-09-09 7:07 ` Matt Fleming 2014-09-09 7:07 ` Matt Fleming 2014-09-09 14:55 ` Ingo Molnar 2014-08-22 7:52 Matt Fleming 2014-08-22 7:52 ` Matt Fleming 2014-08-22 8:15 ` Ingo Molnar 2014-08-22 8:15 ` Ingo Molnar 2014-07-14 12:54 Matt Fleming 2014-07-14 12:54 ` Matt Fleming 2014-06-27 14:51 Matt Fleming 2014-06-27 14:51 ` Matt Fleming 2014-06-04 16:53 Matt Fleming 2014-06-04 16:53 ` Matt Fleming 2014-04-11 7:16 Matt Fleming 2014-04-11 7:16 ` Matt Fleming 2014-04-11 8:27 ` Ingo Molnar 2014-04-11 8:27 ` Ingo Molnar 2014-02-14 13:08 Matt Fleming 2014-02-14 13:08 ` Matt Fleming 2013-11-29 12:09 Matt Fleming 2013-11-29 12:09 ` Matt Fleming 2013-07-11 11:16 Matt Fleming 2013-07-11 11:16 ` Matt Fleming 2013-06-07 11:50 Matt Fleming 2013-06-07 11:50 ` Matt Fleming 2013-06-10 21:36 ` Matt Fleming 2013-06-10 21:36 ` Matt Fleming 2013-05-17 10:18 Matt Fleming 2013-05-17 10:18 ` Matt Fleming 2013-04-25 8:49 Matt Fleming 2013-04-25 8:49 ` Matt Fleming
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