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| author | Palmer Dabbelt <palmer@rivosinc.com> | 2024-09-12 07:23:05 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-09-12 07:23:05 -0700 |
| commit | 9ea7b92b77df7d2eee3c31ef4a19f0f12ec74190 (patch) | |
| tree | d1963d8effd4e52dc7e31bdf2e066eb0c2d1e0dc /arch/riscv/kernel/patch.c | |
| parent | 4ffc8a3422986470972b4487f02e381692269098 (diff) | |
| parent | b635a84bde6f0b94944b5d960f4e6a52ac3555c6 (diff) | |
Merge patch series "remove size limit on XIP kernel"
Nam Cao <namcao@linutronix.de> says:
Hi,
For XIP kernel, the writable data section is always at offset specified in
XIP_OFFSET, which is hard-coded to 32MB.
Unfortunately, this means the read-only section (placed before the
writable section) is restricted in size. This causes build failure if the
kernel gets too large.
This series remove the use of XIP_OFFSET one by one, then remove this
macro entirely at the end, with the goal of lifting this size restriction.
Also some cleanup and documentation along the way.
* b4-shazam-merge
riscv: remove limit on the size of read-only section for XIP kernel
riscv: drop the use of XIP_OFFSET in create_kernel_page_table()
riscv: drop the use of XIP_OFFSET in kernel_mapping_va_to_pa()
riscv: drop the use of XIP_OFFSET in XIP_FIXUP_FLASH_OFFSET
riscv: drop the use of XIP_OFFSET in XIP_FIXUP_OFFSET
riscv: replace misleading va_kernel_pa_offset on XIP kernel
riscv: don't export va_kernel_pa_offset in vmcoreinfo for XIP kernel
riscv: cleanup XIP_FIXUP macro
riscv: change XIP's kernel_map.size to be size of the entire kernel
...
Link: https://lore.kernel.org/r/cover.1717789719.git.namcao@linutronix.de
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/kernel/patch.c')
| -rw-r--r-- | arch/riscv/kernel/patch.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/riscv/kernel/patch.c b/arch/riscv/kernel/patch.c index 69e5796fc51f..34ef522f07a8 100644 --- a/arch/riscv/kernel/patch.c +++ b/arch/riscv/kernel/patch.c @@ -205,6 +205,8 @@ int patch_text_set_nosync(void *addr, u8 c, size_t len) int ret; ret = patch_insn_set(addr, c, len); + if (!ret) + flush_icache_range((uintptr_t)addr, (uintptr_t)addr + len); return ret; } @@ -239,6 +241,8 @@ int patch_text_nosync(void *addr, const void *insns, size_t len) int ret; ret = patch_insn_write(addr, insns, len); + if (!ret) + flush_icache_range((uintptr_t)addr, (uintptr_t)addr + len); return ret; } |