Messages in this thread | | | From | Arvind Sankar <> | Subject | [PATCH v2 0/5] Couple of bugfixes to sev-es series | Date | Thu, 8 Oct 2020 15:16:18 -0400 |
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With the SEV-ES series, the kernel command line is no longer guaranteed to be mapped on entry into the main kernel. This fixes that, and a stackprotector issue that cropped up on head64.c.
The first three patches are preparatory cleanups. Patch 4 fixes the mapping issue and patch 5 disables stack protector for head code.
Changes from v1: - Add comments suggested by Joerg - Split out cmdline into cmdline.h and use it - Leave add_identity_map() as [start,end)
v1: https://lore.kernel.org/lkml/20201007195351.776555-1-nivedita@alum.mit.edu/
Arvind Sankar (5): x86/boot: Initialize boot_params in startup code x86/boot: Split out command-line related declarations x86/boot/64: Show original faulting address in case of error x86/boot/64: Explicitly map boot_params and command line x86/head/64: Disable stack protection for head$(BITS).o
arch/x86/boot/compressed/acpi.c | 1 + arch/x86/boot/compressed/cmdline.c | 1 + arch/x86/boot/compressed/cmdline.h | 13 +++++++ .../boot/compressed/early_serial_console.c | 1 + arch/x86/boot/compressed/head_32.S | 12 ++++--- arch/x86/boot/compressed/head_64.S | 35 +++++++------------ arch/x86/boot/compressed/ident_map_64.c | 22 +++++++++--- arch/x86/boot/compressed/kaslr.c | 7 +--- arch/x86/boot/compressed/misc.c | 10 +----- arch/x86/boot/compressed/misc.h | 4 --- arch/x86/boot/compressed/pgtable_64.c | 7 ++-- arch/x86/kernel/Makefile | 2 ++ 12 files changed, 58 insertions(+), 57 deletions(-) create mode 100644 arch/x86/boot/compressed/cmdline.h
-- 2.26.2
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